{"title":"Nyos","description":"\u003cp\u003eNyos builds reef equipment around quality, function and clean design. Shop \u003ca href=\"\/collections\/nyos-aquariums\"\u003eNyos OPUS G2 aquariums\u003c\/a\u003e in four sizes with Pro-Line or Slim-Line cabinets, \u003ca href=\"\/collections\/nyos-protein-skimmers\"\u003eQuantum and Quantum EQ protein skimmers\u003c\/a\u003e, and the \u003ca href=\"\/collections\/nyos-supplements\"\u003eION-B dosing system and ION Elements\u003c\/a\u003e trace blends.\u003c\/p\u003e\n\u003cp\u003eTheir \u003ca href=\"\/products\/pure-salt-nyos\"\u003ePURE reef salt mix\u003c\/a\u003e applies the same standard to water chemistry: pharmaceutical-grade ingredients, ICP analysis on every batch, and a published QR-code lab report so you know exactly what is going into your reef.\u003c\/p\u003e","products":[{"product_id":"quantum-160-protein-skimmer-nyos","title":"Quantum 160 EQ Protein Skimmer - Nyos","description":"\u003cp class=\"p1\"\u003eThe legendary Nyos Quantum skimmer line just got smarter. The \u003cspan class=\"s1\"\u003e\u003cb\u003eNyos Quantum EQ 160\u003c\/b\u003e\u003c\/span\u003e combines the proven performance of the Quantum series with next-generation digital control via \u003cspan class=\"s1\"\u003e\u003cb\u003eMobius™\u003c\/b\u003e\u003c\/span\u003e or \u003cspan class=\"s1\"\u003e\u003cb\u003eApex Fusion™\u003c\/b\u003e\u003c\/span\u003e, allowing reefers to fine-tune, automate, and monitor their skimmer’s performance directly from their smartphone.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eEach EQ 160 includes the newly engineered \u003cspan class=\"s1\"\u003e\u003cb\u003eEQ Hybrid Wheel\u003c\/b\u003e\u003c\/span\u003e — designed to create an ultra-dense field of microbubbles while reducing rotational mass for quieter, energy-efficient operation. The clear \u003cspan class=\"s1\"\u003e\u003cb\u003eReactor Volute\u003c\/b\u003e\u003c\/span\u003e gives a direct view into bubble formation and makes it easy to spot any blockages or foreign debris.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eOnce the air-water mixture enters the body, the \u003cspan class=\"s1\"\u003e\u003cb\u003eTwister Diffuser Plate\u003c\/b\u003e\u003c\/span\u003e adds a powerful vortex effect that increases dwell time and waste contact for unmatched skimming efficiency. The smooth, tapered body and neck gently guide the foam to the \u003cspan class=\"s1\"\u003e\u003cb\u003eQuick-Twist Collection Cup\u003c\/b\u003e\u003c\/span\u003e, making cleaning fast and effortless.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eWireless Intelligence\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p2\"\u003e \u003c\/p\u003e\n\u003cp class=\"p1\"\u003eControl the Quantum EQ via \u003cspan class=\"s1\"\u003e\u003cb\u003eMobius™\u003c\/b\u003e\u003c\/span\u003e (iOS\/Android) or through \u003cspan class=\"s1\"\u003e\u003cb\u003eApex Fusion™\u003c\/b\u003e\u003c\/span\u003e with the MXM module. Choose from preset modes or set up smart scenes:\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003ePerformance Mode\u003c\/b\u003e\u003c\/span\u003e – 70% skimming power for everyday nutrient export.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003ePlankton Saving Mode\u003c\/b\u003e\u003c\/span\u003e – Reduces performance at night to protect natural plankton.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eNutrient Export Reduction Mode\u003c\/b\u003e\u003c\/span\u003e – Decreases skimming if nutrients are already low.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eSmart Scenes\u003c\/b\u003e\u003c\/span\u003e – Automatically adjust speed during feedings or maintenance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p2\"\u003e \u003c\/p\u003e\n\u003cp class=\"p1\"\u003eAn integrated RGB LED indicates pump speed and status, and built-in safety features prevent overheating or damage if the pump becomes obstructed.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eTSA Recommended for Tanks Up To:\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eHeavy Bioload (Most Common):\u003c\/b\u003e\u003cspan class=\"s1\"\u003e 75 Gallons\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eMedium Bioload:\u003c\/b\u003e\u003cspan class=\"s1\"\u003e 150 Gallons\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eLight Bioload:\u003c\/b\u003e\u003cspan class=\"s1\"\u003e 250 Gallons\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eSpecifications\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eFootprint:\u003c\/b\u003e\u003c\/span\u003e 7.1” x 9.8”\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eHeight:\u003c\/b\u003e\u003cspan class=\"s1\"\u003e 20.9”\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003ePower Consumption:\u003c\/b\u003e\u003cspan class=\"s1\"\u003e 18W @ 120VAC\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003ePump:\u003c\/b\u003e\u003c\/span\u003e 24V Controllable Nyos EQ Hybrid Wheel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p3\"\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eWhat’s Included\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003eNyos Quantum EQ 160 Protein Skimmer Body\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003eCollection Cup with Lid\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e24V Controllable EQ Pump\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003eAdjustable Standpipe with Silencer\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003ePower Supply and Quick-Connect Cable\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Nyos","offers":[{"title":"Default Title","offer_id":49117844504874,"sku":"EQ-7820","price":629.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-quantum-160-protein-skimmer-nyos-1146289403.png?v=1743575405"},{"product_id":"quantum-220-protein-skimmer-nyos","title":"Quantum 220 Protein Skimmer - Nyos","description":"\u003cmeta charset=\"utf-8\"\u003e\n\u003cp\u003e\u003cstrong\u003eExtreme Skimmer Performance for Reef Tanks up to 500 Gallons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEasy To Maintain | Smooth Operation | Low Power Consumption\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePlug and Play Design\u003c\/li\u003e\n\u003cli\u003eSilicone Silencer Feet\u003c\/li\u003e\n\u003cli\u003eTitanium Grade 2 Screws\u003c\/li\u003e\n\u003cli\u003ePrecise Water Level Micro-Adjustments\u003c\/li\u003e\n\u003cli\u003eIndividual Air and Water Settings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWhen it comes to protein skimmers, the Nyos Quantum line is not only stylish, it simply just works very well. Each skimmer includes a Hybrid Wheel which produces extremely fine micro-bubbles and made with super light materials that reduce the rotating mass keeping the pump energy efficient. The Hybrid Wheel is housed in Nyos's Clear-View Reactor volute that lets you see the bubbles being created at the source, while also allowing to you identify any foreign objects that may have entered the volute.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eOnce the bubbles exit the Quantum 5.0 pump, the air\/water mixture is passed through the Nyos Twister bubble plate which helps increase the contact and dwell time within the body. The Twister gives the bubbles additional spin and swirls them in a vortex which greatly increases the contact time and efficiency of the skimmer. On the way up to the collection cup, bubbles are passes through the body and neck which is free of any sharp edges and will gently focus the bubbles into the collection cup to be removed. Once the collection cup is full, it can be removed in seconds with the quick twist-lock design, and even better the entire skimmer can be disassembled down to its individual components for deep cleaning and maintenance.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eEvery Nyos Quantum skimmer includes individual water and air quantity adjustments that let you fine-tune the skimmer for your reef system. Depending on your skimmers submersion depth, bio-load, and many other factors, being able to control how much air and water is being pulled into the skimmer can yield much greater results.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTSA Recommended for tanks up to:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeavy Bio-load (Most Common) - 125 Gallons\u003c\/li\u003e\n\u003cli\u003eMedium Bio-load - 250 Gallons\u003c\/li\u003e\n\u003cli\u003eLight Bio-load - 500 Gallons\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications: \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFootprint - 9.3\" x 12.2\"\u003c\/li\u003e\n\u003cli\u003eHeight - 23.8\"\u003c\/li\u003e\n\u003cli\u003ePower Consumption - 22W @ 120VAC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Included?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1x Nyos Quantum 220 Protein Skimmer Body\u003c\/li\u003e\n\u003cli\u003e1x Nyos Quantum 220 Collection Cup with Lid\u003c\/li\u003e\n\u003cli\u003e1x Nyos Quantum 5.0 Hybrid Wheel Pump\u003c\/li\u003e\n\u003cli\u003e1x Nyos Quantum 220 Stand Pipe with Silencer\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Nyos","offers":[{"title":"Default Title","offer_id":49117844832554,"sku":"SQ220-0_USA","price":639.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-quantum-220-protein-skimmer-nyos-1146289481.png?v=1750277340"},{"product_id":"floating-fish-trap-nyos","title":"Floating Fish Trap - Nyos","description":"\u003cp\u003eThe \u003cstrong\u003eNyos Floating Fish Trap\u003c\/strong\u003e makes catching a fish in a reef tank easy, fast and safe. Traditional fish traps rely on a pull line you have to trigger by hand. The Nyos trap is held against the glass by a magnet instead: remove the outer magnet and the trap turns 90 degrees and floats to the surface, so you can lift it out without putting your arms in the tank.\u003c\/p\u003e\n\u003cp\u003eBecause the magnet holds it anywhere on the glass, you can position the trap deep in the aquarium or in spots that would be hard to reach by hand, and move it as the fish's habits change.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eNo pull line: removing the outer magnet triggers the trap\u003c\/li\u003e\n\u003cli\u003eThe trap turns 90 degrees and floats to the surface on its own\u003c\/li\u003e\n\u003cli\u003eKeeps your hands dry and stress levels low\u003c\/li\u003e\n\u003cli\u003eFlexible positioning anywhere on the glass, including deep areas\u003c\/li\u003e\n\u003cli\u003eCompact: 6.3 in long with a 6 in trap body\u003c\/li\u003e\n\u003cli\u003eWorks through glass up to 15 mm (5\/8 in) thick\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use the Nyos Floating Fish Trap\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003ePut a little of the fish's usual food inside the trap as bait.\u003c\/li\u003e\n\u003cli\u003eAttach the trap to the inside of the glass with the magnet, near where the fish normally feeds.\u003c\/li\u003e\n\u003cli\u003eWait for the fish to swim in through the 2.8 in opening.\u003c\/li\u003e\n\u003cli\u003eRemove the outer magnet. The trap turns 90 degrees and floats to the surface.\u003c\/li\u003e\n\u003cli\u003eLift the trap out of the water and move the fish.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eLength, trap only: 6.3 in\u003c\/li\u003e\n\u003cli\u003eLength with magnet: 8.4 in\u003c\/li\u003e\n\u003cli\u003eOpening diameter: 2.8 in\u003c\/li\u003e\n\u003cli\u003eTrap body diameter: 6 in\u003c\/li\u003e\n\u003cli\u003eMaximum glass thickness: 15 mm (5\/8 in)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eNyos Floating Fish Trap FAQ\u003c\/h2\u003e\n\u003ch3\u003eWhat size fish will fit in the Nyos Floating Fish Trap?\u003c\/h3\u003e\n\u003cp\u003eAny fish that can swim through the 2.8 in opening into the 6 in trap body. That covers most small and mid-size reef fish such as clownfish, damsels, wrasses and small tangs.\u003c\/p\u003e\n\u003ch3\u003eWill the magnet work on my aquarium?\u003c\/h3\u003e\n\u003cp\u003eThe magnet holds through glass up to 15 mm (5\/8 in) thick. Check your tank's glass thickness before buying if it is a large or custom aquarium.\u003c\/p\u003e\n\u003ch3\u003eHow do I trigger the trap?\u003c\/h3\u003e\n\u003cp\u003eRemove the outer magnet from the glass. With nothing holding it in place, the trap turns 90 degrees and floats to the surface for you to lift out. Find more tools for routine care in our \u003ca href=\"\/collections\/aquarium-maintenance\"\u003eaquarium maintenance\u003c\/a\u003e collection.\u003c\/p\u003e","brand":"Nyos","offers":[{"title":"Default Title","offer_id":49117845029162,"sku":"FT-4539","price":69.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-floating-fish-trap-nyos-1146289656.jpg?v=1743558974"},{"product_id":"quantum-300-protein-skimmer-nyos","title":"Quantum 300 Protein Skimmer - Nyos","description":"\u003cmeta charset=\"utf-8\"\u003e\n\u003cp\u003e\u003cstrong\u003eExtreme Skimmer Performance for Reef Tanks up to 1000 Gallons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEasy To Maintain | Smooth Operation | Low Power Consumption\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePlug and Play Design\u003c\/li\u003e\n\u003cli\u003eSilicone Silencer Feet\u003c\/li\u003e\n\u003cli\u003eTitanium Grade 2 Screws\u003c\/li\u003e\n\u003cli\u003ePrecise Water Level Micro-Adjustments\u003c\/li\u003e\n\u003cli\u003eIndividual Air and Water Settings\u003c\/li\u003e\n\u003cli\u003eDual Pump System\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhen it comes to protein skimmers, the Nyos Quantum line is not only stylish, it simply just works very well. Each skimmer includes a Hybrid Wheel which produces extremely fine micro-bubbles and made with super light materials that reduce the rotating mass keeping the pump energy efficient. The Hybrid Wheel is housed in Nyos's Clear-View Reactor volute that lets you see the bubbles being created at the source, while also allowing to you identify any foreign objects that may have entered the volute. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eOnce the bubbles exit the dual Quantum 5.0 pump system, the air\/water mixture is passed through the Nyos Twister bubble plate which helps increase the contact and dwell time within the body. The Twister gives the bubbles additional spin and swirls them in a vortex which greatly increases the contact time and efficiency of the skimmer. On the way up to the collection cup, bubbles are passes through the body and neck which is free of any sharp edges and will gently focus the bubbles into the collection cup to be removed. Once the collection cup is full, it can be removed in seconds with the quick twist-lock design, and even better the entire skimmer can be disassembled down to its individual components for deep cleaning and maintenance. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eEvery Nyos Quantum skimmer includes individual water and air quantity adjustments that let you fine-tune the skimmer for your reef system. Depending on your skimmers submersion depth, bioload, and many other factors, being able to control how much air and water is being pulled into the skimmer can yield much greater results. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTSA Recommended for tanks up to:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeavy Bioload (Most Common) - 250 Gallons\u003c\/li\u003e\n\u003cli\u003eMedium Bioload - 600 Gallons\u003c\/li\u003e\n\u003cli\u003eLight Bioload - 1000 Gallons\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications: \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFootprint - 13.4\" x 16.4\"\u003c\/p\u003e\n\u003cp\u003eHeight - 26\"\u003c\/p\u003e\n\u003cp\u003ePower Consumption - 44W @ 120VAC\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Included?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e1x Nyos Quantum 300 Protein Skimmer Body\u003c\/p\u003e\n\u003cp\u003e1x Nyos Quantum 300 Collection Cup with Lid\u003c\/p\u003e\n\u003cp\u003e2x Nyos Quantum 5.0 Hybrid Wheel Pump\u003c\/p\u003e\n\u003cp\u003e1x Nyos Quantum 300 Stand Pipe with Silencer\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e","brand":"Nyos","offers":[{"title":"Default Title","offer_id":49117845258538,"sku":"SQ300-0_USA","price":1169.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-quantum-300-protein-skimmer-nyos-1146289491.jpg?v=1743582119"},{"product_id":"quantum-eq-300-protein-skimmer-nyos","title":"Quantum 300 EQ Protein Skimmer - Nyos","description":"\u003cp class=\"p1\"\u003eThe iconic Nyos® QUANTUM® skimmer just evolved. Introducing the \u003cspan class=\"s1\"\u003e\u003cb\u003eNyos QUANTUM EQ\u003c\/b\u003e\u003c\/span\u003e, a next-generation protein skimmer that merges the unmatched performance of the QUANTUM line with cutting-edge smart technology — giving reef keepers full wireless control, automation, and precision tuning right from their smartphone.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eSmart Control. Smarter Skimming.\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003e \u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe QUANTUM® EQ connects wirelessly via \u003cspan class=\"s1\"\u003e\u003cb\u003eMobius™\u003c\/b\u003e\u003c\/span\u003e or \u003cspan class=\"s1\"\u003e\u003cb\u003eApex Fusion™\u003c\/b\u003e\u003c\/span\u003e, allowing seamless integration with your existing Ecotech Marine® and AquaIllumination® equipment. Through the Mobius™ app (available for iOS and Android), you can fine-tune every aspect of skimmer performance, create daily schedules, or automate responses during feeding and maintenance.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p4\"\u003e\u003cb\u003eControl Options:\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eMobius™ \u0026amp; Apex Fusion™ Integration:\u003c\/b\u003e\u003c\/span\u003e Full app-based control via Bluetooth connection.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003ePreset Modes:\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003ci\u003ePerformance Mode\u003c\/i\u003e – optimized for maximum nutrient export.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003ci\u003ePlankton Saving Mode\u003c\/i\u003e – automatically reduces skimming at night to preserve natural plankton.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003ci\u003eNutrient Export Reduction Mode\u003c\/i\u003e – decreases skimming when nutrients are already low.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eCustom Scenes:\u003c\/b\u003e\u003c\/span\u003e Automatically adjust skimmer activity during water changes or feeding.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eBuilt-In Intelligence \u0026amp; Safety\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003e \u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe Nyos EQ’s advanced 24V controllable pump continuously monitors performance and safety:\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eSmart Shutdown:\u003c\/b\u003e\u003c\/span\u003e If the intake becomes blocked (e.g., by a snail shell), the pump automatically pauses and flushes the obstruction.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eLED Status Indicators:\u003c\/b\u003e\u003c\/span\u003e An RGB LED displays the current pump speed and doubles as a cabinet flashlight during maintenance (patent pending).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eApp Notifications:\u003c\/b\u003e\u003c\/span\u003e Receive instant alerts for issues or maintenance reminders directly to your phone.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p2\"\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eEngineered for Performance\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003e \u003c\/p\u003e\n\u003cp class=\"p1\"\u003eEvery aspect of the EQ is designed for precision and quiet operation:\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eStepless Pump Control (1–100%)\u003c\/b\u003e\u003c\/span\u003e for micro-adjustable performance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eEnergy-Saving 24V European Pumps\u003c\/b\u003e\u003cspan class=\"s1\"\u003e – up to \u003c\/span\u003e\u003cb\u003e20% less power\u003c\/b\u003e\u003cspan class=\"s1\"\u003e and \u003c\/span\u003e\u003cb\u003e10% more output\u003c\/b\u003e\u003cspan class=\"s1\"\u003e than previous Quantum models.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eClear-View Reactor \u0026amp; Twister Diffuser Plate\u003c\/b\u003e\u003c\/span\u003e for optimal bubble density and contact time.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eTitanium Hardware, Silicone Silencer Feet, and Quick-Twist Cup Removal\u003c\/b\u003e\u003cspan class=\"s1\"\u003e for durability and ease of maintenance.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p2\"\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eTSA Recommended for Tanks Up To:\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p2\"\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eHeavy Bioload:\u003c\/b\u003e\u003cspan class=\"s1\"\u003e 250 Gallons\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eMedium Bioload:\u003c\/b\u003e\u003cspan class=\"s1\"\u003e 600 Gallons\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eLight Bioload:\u003c\/b\u003e\u003cspan class=\"s1\"\u003e 1000 Gallons\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p2\"\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eSpecifications\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eFootprint:\u003c\/b\u003e\u003c\/span\u003e 13.4” x 16.4”\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eHeight:\u003c\/b\u003e\u003cspan class=\"s1\"\u003e 26”\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003ePower Consumption:\u003c\/b\u003e\u003cspan class=\"s1\"\u003e 44W @ 120VAC\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003ePump:\u003c\/b\u003e\u003c\/span\u003e Dual 24V Controllable Nyos EQ Pumps\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p2\"\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eWhat’s Included\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p2\"\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003eNyos® QUANTUM® EQ Protein Skimmer Body\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003eDual 24V Controllable EQ Pumps\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003eCollection Cup with Lid\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003eStandpipe with Silencer\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003eQuick-Connect Power Supply\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e","brand":"Nyos","offers":[{"title":"Default Title","offer_id":50810445234474,"sku":"EQ-7844","price":1679.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-quantum-300-protein-skimmer-nyos-1146289491.jpg?v=1743582119"},{"product_id":"quantum-220-eq-protein-skimmer-nyos","title":"Quantum 220 EQ Protein Skimmer - Nyos","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe \u003cspan class=\"s1\"\u003e\u003cb\u003eNyos Quantum EQ 220\u003c\/b\u003e\u003c\/span\u003e is the evolution of professional-grade skimming — merging the proven performance of the Quantum series with next-generation digital intelligence. Built for serious reef systems up to 500 gallons, the EQ 220 brings you powerful nutrient export with full wireless control, effortless maintenance, and whisper-quiet operation.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eEvery EQ 220 features the \u003cspan class=\"s1\"\u003e\u003cb\u003eNyos EQ Hybrid Wheel\u003c\/b\u003e\u003c\/span\u003e, engineered to generate ultra-fine microbubbles while minimizing energy use and mechanical wear. The \u003cspan class=\"s1\"\u003e\u003cb\u003eClear-View Reactor Volute\u003c\/b\u003e\u003c\/span\u003e gives a direct look into the bubble production chamber — making it easy to monitor performance and identify debris at a glance.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe \u003cspan class=\"s1\"\u003e\u003cb\u003eTwister Diffuser Plate\u003c\/b\u003e\u003c\/span\u003e creates a vortex within the reaction chamber, dramatically improving bubble-to-water contact time for higher efficiency and cleaner water. The smooth, precision-shaped body guides bubbles seamlessly into the \u003cspan class=\"s1\"\u003e\u003cb\u003eQuick-Twist Collection Cup\u003c\/b\u003e\u003c\/span\u003e, allowing for easy removal and maintenance.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eSmart Control and Automation\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p2\"\u003e \u003c\/p\u003e\n\u003cp class=\"p1\"\u003eControl the EQ 220 effortlessly through the \u003cspan class=\"s1\"\u003e\u003cb\u003eMobius™ App\u003c\/b\u003e\u003c\/span\u003e or \u003cspan class=\"s1\"\u003e\u003cb\u003eApex Fusion™\u003c\/b\u003e\u003c\/span\u003e (via MXM module). Whether you’re running daily maintenance or optimizing nutrient export, you have total flexibility at your fingertips.\u003c\/p\u003e\n\u003cp class=\"p4\"\u003e\u003cb\u003eSmart Modes Include:\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003ePerformance Mode:\u003c\/b\u003e\u003c\/span\u003e Runs at 70% for peak nutrient export.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003ePlankton Saving Mode:\u003c\/b\u003e\u003c\/span\u003e Reduces skimming overnight to protect beneficial plankton.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eNutrient Export Reduction Mode:\u003c\/b\u003e\u003c\/span\u003e Prevents over-skimming when nutrient levels drop.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eCustom Scenes:\u003c\/b\u003e\u003c\/span\u003e Automatically adjust speeds during feedings or maintenance events.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p2\"\u003e \u003c\/p\u003e\n\u003cp class=\"p1\"\u003eBuilt-in sensors and safety protocols detect blockages and automatically pause or flush the pump. An RGB LED inside the skimmer displays current speed and doubles as a maintenance light inside your cabinet — patent pending.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eTSA Recommended for Tanks Up To:\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eHeavy Bioload (Most Common):\u003c\/b\u003e\u003cspan class=\"s1\"\u003e 125 Gallons\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eMedium Bioload:\u003c\/b\u003e\u003cspan class=\"s1\"\u003e 250 Gallons\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eLight Bioload:\u003c\/b\u003e\u003cspan class=\"s1\"\u003e 500 Gallons\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p3\"\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eSpecifications\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eFootprint:\u003c\/b\u003e\u003c\/span\u003e 9.3” x 12.2”\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eHeight:\u003c\/b\u003e\u003cspan class=\"s1\"\u003e 23.8”\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003ePower Consumption:\u003c\/b\u003e\u003cspan class=\"s1\"\u003e 22W @ 120VAC\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003ePump:\u003c\/b\u003e\u003c\/span\u003e 24V Controllable Nyos EQ Hybrid Wheel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p3\"\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eWhat’s Included\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003eNyos Quantum EQ 220 Skimmer Body\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003eCollection Cup with Lid\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e24V Controllable EQ Hybrid Pump\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003eStandpipe with Integrated Silencer\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003ePower Supply and Quick-Connect Cables\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Nyos","offers":[{"title":"Default Title","offer_id":50810539082026,"sku":"EQ-7837","price":839.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-quantum-220-protein-skimmer-nyos-1146289481.png?v=1750277340"},{"product_id":"quantum-120-protein-skimmer-nyos","title":"Quantum 120 Protein Skimmer - Nyos","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eExtreme Skimmer Performance for Reef Tanks up to 125 Gallons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEasy To Maintain | Smooth Operation | Low Power Consumption\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePlug and Play Design\u003c\/li\u003e\n\u003cli\u003eSilicone Silencer Feet\u003c\/li\u003e\n\u003cli\u003eTitanium Grade 2 Screws\u003c\/li\u003e\n\u003cli\u003ePrecise Water Level Micro-Adjustments\u003c\/li\u003e\n\u003cli\u003eIndividual Air and Water Settings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWhen it comes to protein skimmers, the Nyos Quantum line is not only stylish, it simply just works very well. Each skimmer includes a Hybrid Wheel which produces extremely fine micro-bubbles and made with super light materials that reduce the rotating mass keeping the pump energy efficient. The Hybrid Wheel is housed in Nyos's Clear-View Reactor volute that lets you see the bubbles being created at the source, while also allowing to you identify any foreign objects that may have entered the volute. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eOnce the bubbles exit the Quantum 1.0 pump, the air\/water mixture is passed through the Nyos Twister bubble plate which helps increase the contact and dwell time within the body. The Twister gives the bubbles additional spin and swirls them in a vortex which greatly increases the contact time and efficiency of the skimmer. On the way up to the collection cup, bubbles are passes through the body and neck which is free of any sharp edges and will gently focus the bubbles into the collection cup to be removed. Once the collection cup is full, it can be removed in seconds with the quick twist-lock design, and even better the entire skimmer can be disassembled down to its individual components for deep cleaning and maintenance. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eEvery Nyos Quantum skimmer includes individual water and air quantity adjustments that let you fine-tune the skimmer for your reef system. Depending on your skimmers submersion depth, bioload, and many other factors, being able to control how much air and water is being pulled into the skimmer can yield much greater results. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTSA Recommended for tanks up to:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeavy Bioload (Most Common)\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003e-\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e50 Gallons\u003c\/li\u003e\n\u003cli\u003eMedium Bioload - 75 Gallons\u003c\/li\u003e\n\u003cli\u003eLight Bioload - 125 Gallons\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications: \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFootprint - 5.9\" x 8.3\"\u003c\/p\u003e\n\u003cp\u003eHeight - 18.3\"\u003c\/p\u003e\n\u003cp\u003ePower Consumption - 8W @ 120VAC\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Included?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e1x Nyos Quantum 120 Protein Skimmer Body\u003c\/p\u003e\n\u003cp\u003e1x Nyos Quantum 120 Collection Cup with Lid\u003c\/p\u003e\n\u003cp\u003e1x Nyos Quantum 1.0 Hybrid Wheel Pump\u003c\/p\u003e\n\u003cp\u003e1x Nyos Quantum 120 Stand Pipe with Silencer\u003c\/p\u003e","brand":"Nyos","offers":[{"title":"Default Title","offer_id":51031677665578,"sku":"SQ120-0_USA","price":339.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-quantum-120-protein-skimmer-nyos-1215411384.webp?v=1774379120"},{"product_id":"quantum-160-protein-skimmer-nyos-1","title":"Quantum 160 Protein Skimmer - Nyos","description":"\u003cp class=\"p1\"\u003e\u003cstrong\u003eExtreme skimming performance for reef tanks up to 250 gallons.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eEasy to maintain. Smooth operation. Efficient by design.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe Nyos Quantum 160 is built for reefers who want powerful, consistent nutrient export without the hassle. With a true plug-and-play design, it’s quick to install, easy to dial in, and designed to run quietly and efficiently day in and day out. Silicone silencer feet reduce vibration, while titanium Grade 2 screws ensure long-term durability in saltwater environments. Fine-tuning is simple with precise micro-adjustments and independent air and water controls, letting you match performance to your system.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eAt the core of the Quantum 160 is Nyos’ Hybrid Wheel, engineered to produce an ultra-dense cloud of microbubbles while keeping energy consumption low. Built from lightweight materials, it reduces rotational mass for improved efficiency and long-term reliability. The pump housing features Nyos’ Clear-View Reactor design, giving you a direct look at bubble production while making it easy to spot and remove any debris that may enter the volute.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eAs the air and water mixture moves through the skimmer, it passes into the Nyos Twister bubble plate. This design creates a controlled vortex, increasing dwell time and maximizing contact between bubbles and waste particles for more efficient skimming. The internal body and neck are completely smooth, allowing bubbles to rise naturally and concentrate into the collection cup without turbulence or disruption.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eMaintenance is just as streamlined. The collection cup removes quickly with a twist-lock design, and the entire skimmer can be broken down into individual components for deep cleaning when needed.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eWith independent air and water adjustments, you have full control to fine-tune performance based on sump depth, bioload, and feeding habits—giving you consistent, reliable results across a wide range of reef setups.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3 class=\"p1\"\u003eTSA Recommended for tanks up to:\u003c\/h3\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eHeavy Bioload (Most Common) – 120 Gallons\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eMedium Bioload – 180 Gallons\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eLight Bioload – 250 Gallons\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3 class=\"p1\"\u003eSpecifications:\u003c\/h3\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eFootprint – 7.3” x 9.4”\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eHeight – 20.9”\u003c\/p\u003e\n\u003cp class=\"p1\"\u003ePower Consumption – ~18W\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3 class=\"p1\"\u003eWhat’s Included:\u003c\/h3\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e1x Nyos Quantum 160 Protein Skimmer Body\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e1x Nyos Quantum 160 Collection Cup with Lid\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e1x Nyos Quantum 3.0 Hybrid Wheel Pump\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e1x Nyos Quantum 160 Stand Pipe with Silencer\u003c\/p\u003e","brand":"Nyos","offers":[{"title":"Default Title","offer_id":51264338297130,"sku":"SQ160-0_USA","price":449.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-quantum-160-protein-skimmer-nyos-1228956933.jpg?v=1774387777"},{"product_id":"quantum-eq-skimmer-upgrade-kit-nyos","title":"Quantum EQ Skimmer Upgrade Kit - Nyos","description":"\u003ch3 class=\"p1\"\u003eSmarter control. Better performance. Same proven skimmer.\u003c\/h3\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe Nyos Quantum EQ Upgrade Kit takes your existing Quantum skimmer and brings it into the modern reefing world. Designed for the Quantum 160, 220, and 300, this upgrade adds full wireless control, improved efficiency, and built-in safety features—without changing the skimmer body you already trust.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eOnce installed, you’ll have full control over pump speed from 1–100%, allowing you to fine-tune performance based on your system, bioload, and feeding schedule. Using the Mobius app, you can easily adjust settings, create schedules, and dial things in with precision. For Apex users, integration is available through the MXM module (sold separately), letting your skimmer work seamlessly with the rest of your equipment.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe EQ system also introduces smart operating modes that adapt to your reef. Performance Mode gives you a strong baseline with room to fine-tune. Plankton Saving Mode reduces skimming at night to preserve beneficial microfauna, while Nutrient Export Reduction Mode helps prevent over-skimming in low nutrient systems.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eSafety is built in. If debris blocks the intake, the pump will automatically shut down to prevent damage and allow the obstruction to clear. If it can’t restart, the system alerts you through the app while the integrated RGB LED flashes red, so you always know what’s going on inside your sump.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThat same RGB LED also gives real-time visual feedback on pump speed and doubles as a cabinet light for maintenance—simple, but incredibly useful when working under your tank.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eAt the core of the upgrade is a European-made 24V pump designed for efficiency and performance. With intelligent control, it delivers up to 20% lower power consumption while increasing output compared to the standard Quantum pump.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eIf you already run a Nyos Quantum, this is the cleanest way to unlock more control, more efficiency, and a smarter, more responsive system.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3 class=\"p1\"\u003eCompatibility\u003c\/h3\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eDesigned for Nyos Quantum 160, 220, and 300 protein skimmers. Be sure to select the correct kit for your specific model.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3 class=\"p1\"\u003eWhat’s Included\u003c\/h3\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003e24V Quantum EQ Skimmer Pump\u003c\/li\u003e\n\u003cli class=\"p1\"\u003ePump Controller\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eRGB LED Skimmer Lighting\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eBubble Plate\u003c\/li\u003e\n\u003cli class=\"p1\"\u003ePower Supply\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cstrong\u003eNote: Skimmer not included. MXM module required for Apex Fusion integration (sold separately).\u003c\/strong\u003e\u003c\/p\u003e","brand":"Nyos","offers":[{"title":"Quantum 160 Upgrade","offer_id":51273595650346,"sku":"EQ-7738","price":299.99,"currency_code":"USD","in_stock":true},{"title":"Quantum 220 Upgrade","offer_id":51273595683114,"sku":"EQ-7745","price":399.99,"currency_code":"USD","in_stock":true},{"title":"Quantum 300 Upgrade","offer_id":51273595715882,"sku":"EQ-7752","price":799.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-quantum-eq-skimmer-upgrade-kit-nyos-1228079052.jpg?v=1773955809"},{"product_id":"ion-elements-ca-mg-nyos","title":"ION Elements 1 CA\/MG Trace Element Blend 250mL - Nyos","description":"\u003cp class=\"p2\"\u003eFine-tune your reef’s trace element supplementation with Nyos ION Elements 1 CA\/MG. Designed specifically for use with the Nyos ION-B CA\/MG+ dosing system, this concentrated trace element blend helps replace key elements that are continuously consumed by growing corals and other reef inhabitants.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eDeveloped using real-world reef aquarium consumption data and modern ICP analysis, ION Elements 1 delivers targeted supplementation of molybdenum, rubidium, and strontium—three important elements often overlooked in traditional dosing programs. By matching supplementation to actual reef demand, hobbyists can maintain greater stability, improve coral health, and support long-term growth and coloration.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eRather than being dosed directly into the aquarium, ION Elements 1 is added to your ION-B CA\/MG+ solution, allowing trace elements to be delivered automatically alongside your daily calcium and magnesium supplementation. This integrated approach simplifies dosing while helping maintain consistent trace element availability.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eKey Features\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned exclusively for use with Nyos ION-B CA\/MG+\u003c\/li\u003e\n\u003cli\u003eSupplements molybdenum, rubidium, and strontium\u003c\/li\u003e\n\u003cli\u003eBased on real reef aquarium trace element consumption\u003c\/li\u003e\n\u003cli\u003eSupports coral growth, coloration, and overall health\u003c\/li\u003e\n\u003cli\u003eAllows customized dosing based on ICP analysis results\u003c\/li\u003e\n\u003cli\u003eIntegrates directly into the Nyos ION dosing system\u003c\/li\u003e\n\u003cli\u003eEasy to adjust for individual aquarium demands\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eIdeal For\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSPS, LPS, and mixed reef aquariums\u003c\/li\u003e\n\u003cli\u003eReef keepers utilizing the Nyos ION dosing method\u003c\/li\u003e\n\u003cli\u003eAquariums monitored through regular ICP testing\u003c\/li\u003e\n\u003cli\u003eAdvanced hobbyists seeking precise trace element control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eWhat’s Included?\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNyos ION Elements 1 CA\/MG (250mL)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Nyos","offers":[{"title":"Default Title","offer_id":51883284005162,"sku":"WC-7004","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-ion-elements-1-ca-mg-nyos-1245671058.webp?v=1782156251"},{"product_id":"ion-elements-2-ca-mg-nyos","title":"ION Elements 2 CA\/MG Trace Element Blend 250mL - Nyos","description":"\u003cp class=\"p1\"\u003eTake trace element supplementation to the next level with Nyos ION Elements 2 CA\/MG. Designed specifically for use with the Nyos ION-B CA\/MG+ dosing system, this concentrated trace element blend replenishes critical micronutrients that are continuously consumed in thriving reef aquariums.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eDeveloped using modern ICP analysis data and real-world reef consumption patterns, ION Elements 2 delivers a carefully balanced blend of chromium, iron, cobalt, copper, manganese, nickel, vanadium, and zinc. These elements play important roles in coral metabolism, coloration, growth, and overall reef health, yet are often difficult to maintain through water changes alone.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eRather than dosing directly into the aquarium, ION Elements 2 is added to your ION-B CA\/MG+ solution, allowing these trace elements to be delivered automatically alongside daily calcium and magnesium supplementation. This integrated approach simplifies reef maintenance while ensuring consistent element availability.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eBecause every aquarium consumes trace elements differently, dosing can be adjusted based on ICP testing results, allowing hobbyists to tailor supplementation to the specific needs of their system.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eKey Features\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned exclusively for use with Nyos ION-B CA\/MG+\u003c\/li\u003e\n\u003cli\u003eContains chromium, iron, cobalt, copper, manganese, nickel, vanadium, and zinc\u003c\/li\u003e\n\u003cli\u003eBased on real reef aquarium trace element consumption\u003c\/li\u003e\n\u003cli\u003eSupports coral growth, coloration, and metabolic function\u003c\/li\u003e\n\u003cli\u003eHelps maintain long-term trace element stability\u003c\/li\u003e\n\u003cli\u003eEasily customized through ICP testing\u003c\/li\u003e\n\u003cli\u003eIntegrates directly into the Nyos ION dosing method\u003c\/li\u003e\n\u003cli\u003eSimplifies advanced trace element supplementation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eIdeal For\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSPS, LPS, and mixed reef aquariums\u003c\/li\u003e\n\u003cli\u003eReef keepers using the Nyos ION system\u003c\/li\u003e\n\u003cli\u003eAquariums monitored with regular ICP testing\u003c\/li\u003e\n\u003cli\u003eAdvanced hobbyists seeking precise trace element control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eWhat’s Included?\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNyos ION Elements 2 CA\/MG (250mL)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Nyos","offers":[{"title":"Default Title","offer_id":51883500339498,"sku":"WC-6984","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-ion-elements-2-ca-mg-nyos-1245671057.webp?v=1782156217"},{"product_id":"ion-elements-3-alk-ph-nyos-copy","title":"ION Elements 3 ALK\/pH Trace Element Blend 250mL - Nyos","description":"\u003cp class=\"p1\"\u003eMaintain optimal trace element levels while supporting stable alkalinity and pH with Nyos ION Elements 3 ALK\/pH. Designed specifically for use with the Nyos ION-B ALK\/pH+ dosing system, this concentrated trace element blend replenishes key elements that are continuously consumed by corals and other reef inhabitants.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eBuilt on modern ICP analysis data and real-world reef aquarium consumption patterns, ION Elements 3 delivers a carefully balanced blend of fluorine, iodine, potassium, and selenium. These elements play critical roles in coral coloration, tissue health, metabolic processes, and overall reef vitality, making them essential components of a complete supplementation strategy.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eRather than being dosed directly into the aquarium, ION Elements 3 is added to your ION-B ALK\/pH+ solution, allowing trace elements to be delivered automatically alongside daily alkalinity supplementation. This streamlined approach ensures consistent dosing while reducing the complexity of maintaining advanced reef chemistry.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eBecause every reef aquarium has unique consumption rates, dosing can be fine-tuned through regular ICP testing, allowing hobbyists to match supplementation precisely to their system’s needs.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eKey Features\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned exclusively for use with Nyos ION-B ALK\/pH+\u003c\/li\u003e\n\u003cli\u003eContains fluorine, iodine, potassium, and selenium\u003c\/li\u003e\n\u003cli\u003eBased on real reef aquarium trace element consumption\u003c\/li\u003e\n\u003cli\u003eSupports coral coloration, growth, and overall health\u003c\/li\u003e\n\u003cli\u003eHelps maintain long-term trace element stability\u003c\/li\u003e\n\u003cli\u003eEasily adjusted based on ICP testing results\u003c\/li\u003e\n\u003cli\u003eIntegrates directly into the Nyos ION dosing method\u003c\/li\u003e\n\u003cli\u003eSimplifies advanced trace element supplementation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eIdeal For\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSPS, LPS, and mixed reef aquariums\u003c\/li\u003e\n\u003cli\u003eReef keepers using the Nyos ION system\u003c\/li\u003e\n\u003cli\u003eAquariums monitored through regular ICP analysis\u003c\/li\u003e\n\u003cli\u003eHobbyists seeking precise control of trace element levels\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eWhat’s Included?\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNyos ION Elements 3 ALK\/pH (250mL)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Nyos","offers":[{"title":"Default Title","offer_id":51883551293738,"sku":"WC-6946","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-ion-elements-3-alk-ph-nyos-1245671056.jpg?v=1782156190"},{"product_id":"ion-b-ca-mg-nyos","title":"ION-B CA\/MG+ Dosing Solution - Nyos","description":"\u003cp class=\"p1\"\u003eMaintain stable calcium and magnesium levels with Nyos ION-B CA\/MG+, a concentrated, ready-to-use solution designed for modern reef aquariums. As part of the Nyos ION-B dosing system, this formula replenishes essential elements consumed by growing corals while helping maintain long-term ionic balance within the aquarium.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eIn addition to calcium and magnesium, ION-B CA\/MG+ contains strontium, potassium, and boron to support proper ion balance and overall reef health. This balanced approach helps simplify supplementation while providing the major elements needed for coral growth, skeletal development, and vibrant coloration.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eWhen paired with Nyos ION-B ALK\/pH+, the complete ION-B system replaces consumed calcium, alkalinity, and magnesium while helping prevent ion imbalance and supporting stable pH levels between 8.0 and 8.3. The result is a streamlined dosing solution that is simple to use, highly effective, and adaptable to the needs of your reef.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eKey Features\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eConcentrated, ready-to-use calcium and magnesium solution\u003c\/li\u003e\n\u003cli\u003ePart of the Nyos ION-B dosing system\u003c\/li\u003e\n\u003cli\u003eReplenishes calcium and magnesium consumed by corals\u003c\/li\u003e\n\u003cli\u003eIncludes strontium, potassium, and boron for ion balancing\u003c\/li\u003e\n\u003cli\u003eHelps maintain long-term chemical stability\u003c\/li\u003e\n\u003cli\u003eSupports coral growth and skeletal development\u003c\/li\u003e\n\u003cli\u003eWorks in conjunction with ION-B ALK\/pH+\u003c\/li\u003e\n\u003cli\u003eEasy to dose and ideal for automated dosing systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eIdeal For\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSPS, LPS, and mixed reef aquariums\u003c\/li\u003e\n\u003cli\u003eReef keepers seeking a simplified dosing approach\u003c\/li\u003e\n\u003cli\u003eAquariums with moderate to high calcium demand\u003c\/li\u003e\n\u003cli\u003eHobbyists using the complete Nyos ION-B method\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eWhat’s Included?\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNyos ION-B CA\/MG+ Liquid\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Nyos","offers":[{"title":"Default Title","offer_id":51883664703786,"sku":"WC-7066","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-ion-b-ca-mg-nyos-1245671055.webp?v=1782156160"},{"product_id":"ion-b-alk-ph-nyos","title":"ION-B ALK\/pH+ Dosing Solution - Nyos","description":"\u003cp class=\"p1\"\u003eMaintain stable alkalinity and support optimal pH with Nyos ION-B ALK\/pH+, a concentrated, ready-to-use solution developed for modern reef aquariums. As a core component of the Nyos ION-B Method, this formula replenishes consumed alkalinity while helping maintain the stable water chemistry that corals need for healthy growth and coloration.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eIn addition to alkalinity support, ION-B ALK\/pH+ contains sulfate, bromine, and fluorine to help maintain proper ionic balance over time. This balanced approach helps prevent long-term chemistry drift while supporting the natural biological processes that occur within thriving reef systems.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eWhen used alongside Nyos ION-B CA\/MG+, the complete ION-B Method replaces consumed alkalinity, calcium, and magnesium while helping stabilize pH between 8.0 and 8.3. The result is a simplified, highly effective dosing system that provides the essential building blocks for coral growth while reducing the complexity of reef supplementation.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eKey Features\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eConcentrated, ready-to-use alkalinity solution\u003c\/li\u003e\n\u003cli\u003eHelps increase and stabilize pH\u003c\/li\u003e\n\u003cli\u003ePart of the Nyos ION-B dosing system\u003c\/li\u003e\n\u003cli\u003eReplenishes alkalinity consumed by corals\u003c\/li\u003e\n\u003cli\u003eContains sulfate, bromine, and fluorine for ion balancing\u003c\/li\u003e\n\u003cli\u003eSupports coral growth and skeletal development\u003c\/li\u003e\n\u003cli\u003eHelps prevent long-term ionic imbalance\u003c\/li\u003e\n\u003cli\u003eEasy to dose and ideal for automated dosing systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eIdeal For\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSPS, LPS, and mixed reef aquariums\u003c\/li\u003e\n\u003cli\u003eReef keepers seeking stable alkalinity and pH\u003c\/li\u003e\n\u003cli\u003eAquariums with moderate to high coral demand\u003c\/li\u003e\n\u003cli\u003eHobbyists using the complete Nyos ION-B Method\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eHow It Works\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eCorals consume alkalinity and calcium in a relatively fixed ratio. The Nyos ION-B system is designed around this natural consumption pattern, allowing equal dosing of ION-B ALK\/pH+ and ION-B CA\/MG+ in most reef aquariums for simple, balanced supplementation.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eWhat’s Included?\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNyos ION-B ALK\/pH+ Liquid\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Nyos","offers":[{"title":"Default Title","offer_id":51883847581994,"sku":"WC-7042","price":29.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-ion-b-alk-ph-nyos-1245671054.webp?v=1782156131"},{"product_id":"pure-salt-nyos","title":"PURE Reef Salt Mix - Nyos","description":"\u003cp\u003eNyos PURE Salt Mix is a premium synthetic sea salt formulated to deliver exceptional purity, consistency, and reliability for modern reef aquariums. Manufactured using pharmaceutical-grade ingredients and a specialized blending process, PURE provides stable, near-natural seawater parameters while minimizing unwanted contaminants that can impact aquarium health.\u003c\/p\u003e\n\u003cp\u003eUnlike many salt mixes produced through seawater evaporation, Nyos PURE utilizes highly refined sodium chloride and ultra-pure calcium and magnesium compounds to create an exceptionally clean salt. The result is crystal-clear mixed saltwater with no yellow discoloration and virtually no insoluble residue, helping keep your mixing containers and storage bins cleaner while reducing maintenance.\u003c\/p\u003e\n\u003cp\u003eThanks to its fine particle size and premium ingredients, Nyos PURE dissolves in approximately five minutes at room temperature and is ready for immediate use without requiring extended mixing or aging. Every batch is ICP-tested and documented, allowing hobbyists to verify the exact chemistry of their salt mix before it ever enters their aquarium.\u003c\/p\u003e\n\u003cp\u003eDesigned around natural seawater values rather than elevated parameters, Nyos PURE supports healthy coral growth, vibrant coloration, and excellent polyp extension while remaining suitable for both routine water changes and larger system maintenance.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features of Nyos PURE Salt Mix\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePharmaceutical-grade raw ingredients for exceptional purity\u003c\/li\u003e\n\u003cli\u003eCrystal-clear saltwater with no yellow tint\u003c\/li\u003e\n\u003cli\u003eDissolves in approximately 5 minutes\u003c\/li\u003e\n\u003cli\u003eMinimal residue left behind after mixing\u003c\/li\u003e\n\u003cli\u003eConsistent chemistry from the first scoop to the last\u003c\/li\u003e\n\u003cli\u003eNear-natural seawater parameters\u003c\/li\u003e\n\u003cli\u003eSupports coral growth, coloration, and polyp extension\u003c\/li\u003e\n\u003cli\u003eFree of organic additives that may contribute to nuisance algae or cyanobacteria\u003c\/li\u003e\n\u003cli\u003eSuitable for both small and large water changes\u003c\/li\u003e\n\u003cli\u003eEvery batch is ICP tested and quality verified\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow Much Nyos PURE Salt Do You Need Per Gallon?\u003c\/h2\u003e\n\u003cp\u003eNyos publishes an exact dose rather than a range: use \u003cstrong\u003e39 grams per litre\u003c\/strong\u003e to reach 34 ppt, or \u003cstrong\u003e40 grams per litre\u003c\/strong\u003e to reach 35 ppt. That works out to roughly \u003cstrong\u003e148–151 grams per US gallon\u003c\/strong\u003e. Always confirm final salinity with a calibrated refractometer before the water goes into your display.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e5 gallons (19 L) — about 0.76 kg of salt\u003c\/li\u003e\n\u003cli\u003e10 gallons (38 L) — about 1.5 kg of salt\u003c\/li\u003e\n\u003cli\u003e25 gallons (95 L) — about 3.8 kg of salt\u003c\/li\u003e\n\u003cli\u003e50 gallons (189 L) — about 7.6 kg of salt\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNeed a different volume? Run the numbers with our \u003ca href=\"\/pages\/salt-mix-calculator\"\u003esaltwater mix calculator\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eHow Long Does Nyos PURE Take to Dissolve?\u003c\/h2\u003e\n\u003cp\u003eNyos PURE dissolves in approximately five minutes at room temperature. The fine, evenly matched particle size means it goes clear quickly and does not need to be aged overnight before use, so you can mix a water change and use it the same session. A circulation pump or powerhead is still recommended for even mixing, and letting larger batches run for an hour helps stabilize gas exchange and pH.\u003c\/p\u003e\n\n\u003ch2\u003eWhat Salinity and Specific Gravity Should You Mix To?\u003c\/h2\u003e\n\u003cp\u003eNatural seawater sits at about 35 ppt, which reads roughly \u003cstrong\u003e1.0264 specific gravity\u003c\/strong\u003e at 77°F. Most reef aquariums are kept at that level, and Nyos publishes the dose to hit it exactly: 40 grams per litre for 35 ppt, or 39 grams per litre for a slightly lower 34 ppt.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMixed reef and SPS systems\u003c\/strong\u003e — 35 ppt (about 1.026) is the usual target, matching natural seawater.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFish-only systems\u003c\/strong\u003e — often run a little lower, around 33–34 ppt.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasuring\u003c\/strong\u003e — a refractometer calibrated with a known 35 ppt standard is far more reliable than a swing-arm hydrometer. Specific gravity readings shift with temperature, so compare at a consistent temperature.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBecause Nyos PURE is blended to a published dose rather than a range, weighing the salt gets you close on the first try — but always confirm with a meter before the water reaches livestock.\u003c\/p\u003e\n\n\u003ch2\u003eNyos PURE 10 kg vs 20 kg: Which Size Should You Buy?\u003c\/h2\u003e\n\u003cp\u003eBoth sizes are the identical formula — only the quantity differs.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e10 kg\u003c\/strong\u003e mixes roughly 260 litres, about \u003cstrong\u003e68 US gallons\u003c\/strong\u003e of saltwater at 34 ppt. A good fit for nano and mid-size systems, or for anyone trying Nyos PURE for the first time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20 kg\u003c\/strong\u003e mixes roughly 520 litres, about \u003cstrong\u003e135 US gallons\u003c\/strong\u003e. The better value per gallon for larger displays or frequent, higher-volume water changes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBecause every batch is ICP tested, buying the larger size also means more water changes from a single verified batch. Compare it against the rest of our \u003ca href=\"\/collections\/salt\"\u003eaquarium salt mixes\u003c\/a\u003e before deciding.\u003c\/p\u003e\n\n\u003ch2\u003eIs Nyos PURE Good for SPS Corals?\u003c\/h2\u003e\n\u003cp\u003eYes. Nyos PURE targets near-natural seawater values — alkalinity around 8.5 dKH rather than the elevated levels some reef salts use — which suits SPS-dominated and mixed reef systems where alkalinity is kept deliberately stable and supplemented separately. Because it contains no organic additives, it also avoids feeding the nuisance algae and cyanobacteria that can follow richer salt mixes.\u003c\/p\u003e\n\n\u003ch2\u003eNyos PURE Water Parameters (35 ppt)\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAlkalinity: 7.5–8.9 dKH\u003c\/li\u003e\n\u003cli\u003eCalcium: 415–450 ppm\u003c\/li\u003e\n\u003cli\u003eMagnesium: 1320–1400 ppm\u003c\/li\u003e\n\u003cli\u003ePotassium: 385–430 ppm\u003c\/li\u003e\n\u003cli\u003eBromine: 57–67 ppm\u003c\/li\u003e\n\u003cli\u003eBoron: 4–5 ppm\u003c\/li\u003e\n\u003cli\u003eStrontium: 8–12 ppm\u003c\/li\u003e\n\u003cli\u003eSulfur: 860–960 ppm\u003c\/li\u003e\n\u003cli\u003eLithium: 100–250 µg\/L\u003c\/li\u003e\n\u003cli\u003eNickel: 0–10 µg\/L\u003c\/li\u003e\n\u003cli\u003eMolybdenum: 0–15 µg\/L\u003c\/li\u003e\n\u003cli\u003eVanadium: 0–5 µg\/L\u003c\/li\u003e\n\u003cli\u003eManganese: 0–5 µg\/L\u003c\/li\u003e\n\u003cli\u003eIodine: 30–90 µg\/L\u003c\/li\u003e\n\u003cli\u003eIron: 0–35 µg\/L\u003c\/li\u003e\n\u003cli\u003eBarium: 0–21 µg\/L\u003c\/li\u003e\n\u003cli\u003eSilicon: 0–225 µg\/L\u003c\/li\u003e\n\u003cli\u003ePhosphate: 0–0.04 ppm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose Nyos PURE?\u003c\/h2\u003e\n\u003cp\u003eEvery batch of Nyos PURE is individually ICP analyzed to verify its composition and consistency. A QR code on the packaging provides access to the complete laboratory analysis, giving reef keepers confidence that every water change starts with clean, precisely balanced saltwater. Whether you’re maintaining a thriving mixed reef or an SPS-dominated aquarium, Nyos PURE delivers the purity, consistency, and performance needed to keep your reef looking its best.\u003c\/p\u003e","brand":"Nyos","offers":[{"title":"10 kg (68 Gallon)","offer_id":52140806471978,"sku":"WC-6687","price":49.99,"currency_code":"USD","in_stock":true},{"title":"20 kg (135 Gallon)","offer_id":52140806504746,"sku":"WC-6670","price":89.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-pure-salt-nyos-1251340803.png?v=1785266351"},{"product_id":"opus-g2-440-pro-line-with-grey-cabinet-aquarium-plumbing-sump-stand-kit","title":"OPUS G2 440 Pro-Line Aquarium (100 Gal) - Grey - Nyos","description":"\u003cp\u003eThe \u003cstrong\u003eNyos OPUS G2 440 Pro-Line\u003c\/strong\u003e in basalt grey is a complete reef aquarium system: a rimless, ultra-clear 100-gallon display with a hidden overflow, the premium Pro-Line cabinet, ready-to-install PVC plumbing, a five-chamber sump and a separate refill tank.\u003c\/p\u003e\n\u003cp\u003eThe OPUS G2 440 is the flagship of the range: 125 cm (49.2 in) long, 378 L (100 gal) gross in the display, and the only OPUS G2 built with 12 mm (0.47 in) glass. Its four-foot footprint and 21.7 in depth give a mixed or SPS reef room to grow and a broader fish list room to swim, served by the largest OPUS sump at 62 L (16.4 gal).\u003c\/p\u003e\n\n\u003ch2\u003eNyos OPUS G2 440 Pro-Line Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHidden overflow:\u003c\/strong\u003e the overflow box sits outside the tank, recessed into the back pane, so no overflow box takes up aquascaping space inside the display and the back pane is easy to keep clean.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-clear glass on three sides:\u003c\/strong\u003e the front and both side panes are ultra-clear glass with a much weaker green tint than standard glass, so fish and coral colors look true.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear edges and a deep blue back pane:\u003c\/strong\u003e only transparent silicone is used in the display, and the tinted back pane creates a sense of depth once the lights are on.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRimless pool tank:\u003c\/strong\u003e 12 mm (0.47 in) glass with no top frame or cross bracing inside the display.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtra depth for aquascaping:\u003c\/strong\u003e 21.7 in (55 cm) front to back.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuiet, adjustable drain:\u003c\/strong\u003e the main drain has an adjustable valve to tune out drain noise, backed by a separate emergency drain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge skimmer chamber:\u003c\/strong\u003e 13 x 20 in, with a constant water level of about 8 in and room for a skimmer plus a media or algae reactor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in the EU\u003c\/strong\u003e with FSC-certified cabinet production.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eThe Pro-Line Cabinet in Basalt Grey\u003c\/h2\u003e\n\u003cp\u003eThe Pro-Line cabinet measures 52.6 x 25.8 x 35.4 in, a larger footprint than the tank that leaves extra room for equipment and accessories. Its cubic design conceals the aquarium's bottom silicone seam and sand edge. All three doors are 38 mm solid boards on BLUM 125° soft-close hinges and open with a recessed push-to-open system, and height-adjustable feet let you level the system precisely. With the tank in place, the OPUS G2 440 Pro-Line stands 4 ft 8 in (143 cm) tall.\u003c\/p\u003e\n\u003cp\u003eThis listing is the basalt grey cabinet, with a matt finish. Both colors use moisture-resistant boards to EN 312 with a melamine resin coating that resists scratches and impacts, and waterproof pads inside the cabinet. The wood comes from verified legal sources under ISO 38200 and is produced in FSC-certified factories with 30% recycled material. Prefer white? See the \u003ca href=\"\/products\/opus-g2-440-pro-line-with-white-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 440 Pro-Line in white\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eOPUS G2 440 Pro-Line Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay tank (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e49.2 x 21.7 x 20.9 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay volume (gross)\u003c\/th\u003e\n\u003ctd\u003e378 L (100 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eGlass\u003c\/th\u003e\n\u003ctd\u003e12 mm (0.47 in); ultra-clear front and side panes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePro-Line cabinet (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e52.6 x 25.8 x 35.4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTotal height, tank and cabinet\u003c\/th\u003e\n\u003ctd\u003e4 ft 8 in (143 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e23.6 x 20 x 13.8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump volume at 8 in water level\u003c\/th\u003e\n\u003ctd\u003e62 L (16.4 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSkimmer chamber footprint\u003c\/th\u003e\n\u003ctd\u003e13 x 20 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRefill tank\u003c\/th\u003e\n\u003ctd\u003e6.7 x 16.5 x 20 in, 22 L (6 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRecommended return pump\u003c\/th\u003e\n\u003ctd\u003e525 GPH (2,000 L\/h)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHinges\u003c\/th\u003e\n\u003ctd\u003eBLUM 125° soft-close\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHeight-adjustable feet\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCabinet finish\u003c\/th\u003e\n\u003ctd\u003eBasalt grey, matt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOPUS G2 440 display tank with external overflow box and ultra-clear glass on three sides\u003c\/li\u003e\n\u003cli\u003ePro-Line cabinet in basalt grey\u003c\/li\u003e\n\u003cli\u003eReady-to-install PVC plumbing with an adjustable main drain valve and an emergency drain\u003c\/li\u003e\n\u003cli\u003eFive-chamber sump with a nylon filter sock\u003c\/li\u003e\n\u003cli\u003eSeparate 6-gallon refill tank\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot included: return pump, protein skimmer, lighting, heaters, circulation pumps, auto top-off, rock and sand.\u003c\/p\u003e\n\n\u003ch2\u003eHow the OPUS G2 440 Sump Works\u003c\/h2\u003e\n\u003cp\u003eWater leaves the display through the hidden overflow into the sump's sedimentation chamber, then passes through the nylon filter sock. The third chamber is the main filter chamber: it holds a constant water level of about 8 in (21 cm) and has room for a protein skimmer and a reactor. A bubble trap follows, and the final return chamber is where the return pump sits and where evaporation shows up, so that is where an auto top-off replaces water from the refill tank.\u003c\/p\u003e\n\u003cp\u003eThe separate refill tank is 20 in (50 cm) tall, and Nyos sizes it to hold about a week of RO water.\u003c\/p\u003e\n\n\u003ch2\u003eRecommended Equipment for the OPUS G2 440 (Sold Separately)\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtein skimmer:\u003c\/strong\u003e the \u003ca href=\"\/products\/quantum-220-protein-skimmer-nyos\"\u003eNyos Quantum 220\u003c\/a\u003e, whose 9.3 x 12.2 in footprint fits the 440's skimmer chamber. Compare all \u003ca href=\"\/collections\/nyos-protein-skimmers\"\u003eNyos Quantum protein skimmers\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReturn pump:\u003c\/strong\u003e about 525 GPH (2,000 L\/h), Nyos's recommendation for every OPUS G2 size. Shop \u003ca href=\"\/collections\/return-pumps\"\u003ereturn pumps\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCirculation:\u003c\/strong\u003e roughly 2,000 to 4,000 GPH of total flow from \u003ca href=\"\/collections\/powerheads\"\u003epowerheads\u003c\/a\u003e, which is 20 to 40 times the display volume per hour for a mixed reef.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating:\u003c\/strong\u003e as a rule of thumb, 350 to 575 W total, split across two \u003ca href=\"\/collections\/heaters-chillers-and-thermometers\"\u003eaquarium heaters\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto top-off:\u003c\/strong\u003e the refill tank is included but the controller is not. Add an \u003ca href=\"\/collections\/auto-top-off\"\u003eauto top-off system\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLighting:\u003c\/strong\u003e choose a reef light sized for a 49.2 in long, 21.7 in deep tank from our \u003ca href=\"\/collections\/aquarium-lighting\"\u003eaquarium lighting\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eNyos OPUS G2 440 Pro-Line FAQ\u003c\/h2\u003e\n\u003ch3\u003eWhat are the dimensions of the Nyos OPUS G2 440 Pro-Line?\u003c\/h3\u003e\n\u003cp\u003eThe display tank is 49.2 x 21.7 x 20.9 in (L x W x H). The Pro-Line cabinet is 52.6 x 25.8 x 35.4 in, and the complete system stands 4 ft 8 in (143 cm) tall. The sump inside the cabinet measures 23.6 x 20 x 13.8 in.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between the OPUS G2 440 Pro-Line and Slim-Line?\u003c\/h3\u003e\n\u003cp\u003eThe tank, sump, plumbing and refill tank are identical; only the cabinet changes. The Pro-Line cabinet (52.6 x 25.8 x 35.4 in) is larger than the tank for extra storage and adds BLUM 125° soft-close hinges, 38 mm solid doors, height-adjustable feet and a frame that hides the sand line. The Slim-Line cabinet (49.2 x 21.7 x 35.4 in) matches the tank footprint, uses standard hinges and costs less. See the \u003ca href=\"\/products\/opus-g2-440-slim-line-with-grey-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 440 Slim-Line in basalt grey\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eHow much water does the OPUS G2 440 hold?\u003c\/h3\u003e\n\u003cp\u003eThe display holds 378 L (100 gal) gross and the sump holds 62 L (16.4 gal) at its 8 in operating level, for about 116 gallons of gross system volume before rock and sand displace some of it.\u003c\/p\u003e\n\u003ch3\u003eDoes the OPUS G2 440 come with an auto top-off?\u003c\/h3\u003e\n\u003cp\u003eNo. It includes a separate 6-gallon refill tank that holds about a week of RO water, but the auto top-off controller and sensor are sold separately. Evaporation shows up in the sump's return chamber, so that is where the ATO sensor goes.\u003c\/p\u003e\n\u003ch3\u003eWhich protein skimmer fits the OPUS G2 440?\u003c\/h3\u003e\n\u003cp\u003eWe recommend the \u003ca href=\"\/products\/quantum-220-protein-skimmer-nyos\"\u003eNyos Quantum 220\u003c\/a\u003e. Its 9.3 x 12.2 in footprint fits the 440's 13 x 20 in skimmer chamber, which holds a constant water level of about 8 in.\u003c\/p\u003e\n\u003cp\u003eCompare all four sizes and both cabinet lines in our \u003ca href=\"\/collections\/nyos-aquariums\"\u003eNyos OPUS G2 aquarium collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Nyos","offers":[{"title":"Default Title","offer_id":52469948547370,"sku":"OPG2-0821","price":3399.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-drop-ship-opus-g2-440-pro-line-grey-nyos-1256986793.jpg?v=1788465130"},{"product_id":"opus-g2-440-pro-line-with-white-cabinet-aquarium-plumbing-sump-stand-kit","title":"OPUS G2 440 Pro-Line Aquarium (100 Gal) - White - Nyos","description":"\u003cp\u003eThe \u003cstrong\u003eNyos OPUS G2 440 Pro-Line\u003c\/strong\u003e in white is a complete reef aquarium system: a rimless, ultra-clear 100-gallon display with a hidden overflow, the premium Pro-Line cabinet, ready-to-install PVC plumbing, a five-chamber sump and a separate refill tank.\u003c\/p\u003e\n\u003cp\u003eThe OPUS G2 440 is the flagship of the range: 125 cm (49.2 in) long, 378 L (100 gal) gross in the display, and the only OPUS G2 built with 12 mm (0.47 in) glass. Its four-foot footprint and 21.7 in depth give a mixed or SPS reef room to grow and a broader fish list room to swim, served by the largest OPUS sump at 62 L (16.4 gal).\u003c\/p\u003e\n\n\u003ch2\u003eNyos OPUS G2 440 Pro-Line Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHidden overflow:\u003c\/strong\u003e the overflow box sits outside the tank, recessed into the back pane, so no overflow box takes up aquascaping space inside the display and the back pane is easy to keep clean.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-clear glass on three sides:\u003c\/strong\u003e the front and both side panes are ultra-clear glass with a much weaker green tint than standard glass, so fish and coral colors look true.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear edges and a deep blue back pane:\u003c\/strong\u003e only transparent silicone is used in the display, and the tinted back pane creates a sense of depth once the lights are on.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRimless pool tank:\u003c\/strong\u003e 12 mm (0.47 in) glass with no top frame or cross bracing inside the display.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtra depth for aquascaping:\u003c\/strong\u003e 21.7 in (55 cm) front to back.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuiet, adjustable drain:\u003c\/strong\u003e the main drain has an adjustable valve to tune out drain noise, backed by a separate emergency drain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge skimmer chamber:\u003c\/strong\u003e 13 x 20 in, with a constant water level of about 8 in and room for a skimmer plus a media or algae reactor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in the EU\u003c\/strong\u003e with FSC-certified cabinet production.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eThe Pro-Line Cabinet in White\u003c\/h2\u003e\n\u003cp\u003eThe Pro-Line cabinet measures 52.6 x 25.8 x 35.4 in, a larger footprint than the tank that leaves extra room for equipment and accessories. Its cubic design conceals the aquarium's bottom silicone seam and sand edge. All three doors are 38 mm solid boards on BLUM 125° soft-close hinges and open with a recessed push-to-open system, and height-adjustable feet let you level the system precisely. With the tank in place, the OPUS G2 440 Pro-Line stands 4 ft 8 in (143 cm) tall.\u003c\/p\u003e\n\u003cp\u003eThis listing is the white cabinet, with a matt finish. Both colors use moisture-resistant boards to EN 312 with a melamine resin coating that resists scratches and impacts, and waterproof pads inside the cabinet. The wood comes from verified legal sources under ISO 38200 and is produced in FSC-certified factories with 30% recycled material. Prefer basalt grey? See the \u003ca href=\"\/products\/opus-g2-440-pro-line-with-grey-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 440 Pro-Line in basalt grey\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eOPUS G2 440 Pro-Line Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay tank (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e49.2 x 21.7 x 20.9 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay volume (gross)\u003c\/th\u003e\n\u003ctd\u003e378 L (100 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eGlass\u003c\/th\u003e\n\u003ctd\u003e12 mm (0.47 in); ultra-clear front and side panes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePro-Line cabinet (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e52.6 x 25.8 x 35.4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTotal height, tank and cabinet\u003c\/th\u003e\n\u003ctd\u003e4 ft 8 in (143 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e23.6 x 20 x 13.8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump volume at 8 in water level\u003c\/th\u003e\n\u003ctd\u003e62 L (16.4 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSkimmer chamber footprint\u003c\/th\u003e\n\u003ctd\u003e13 x 20 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRefill tank\u003c\/th\u003e\n\u003ctd\u003e6.7 x 16.5 x 20 in, 22 L (6 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRecommended return pump\u003c\/th\u003e\n\u003ctd\u003e525 GPH (2,000 L\/h)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHinges\u003c\/th\u003e\n\u003ctd\u003eBLUM 125° soft-close\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHeight-adjustable feet\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCabinet finish\u003c\/th\u003e\n\u003ctd\u003eWhite, matt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOPUS G2 440 display tank with external overflow box and ultra-clear glass on three sides\u003c\/li\u003e\n\u003cli\u003ePro-Line cabinet in white\u003c\/li\u003e\n\u003cli\u003eReady-to-install PVC plumbing with an adjustable main drain valve and an emergency drain\u003c\/li\u003e\n\u003cli\u003eFive-chamber sump with a nylon filter sock\u003c\/li\u003e\n\u003cli\u003eSeparate 6-gallon refill tank\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot included: return pump, protein skimmer, lighting, heaters, circulation pumps, auto top-off, rock and sand.\u003c\/p\u003e\n\n\u003ch2\u003eHow the OPUS G2 440 Sump Works\u003c\/h2\u003e\n\u003cp\u003eWater leaves the display through the hidden overflow into the sump's sedimentation chamber, then passes through the nylon filter sock. The third chamber is the main filter chamber: it holds a constant water level of about 8 in (21 cm) and has room for a protein skimmer and a reactor. A bubble trap follows, and the final return chamber is where the return pump sits and where evaporation shows up, so that is where an auto top-off replaces water from the refill tank.\u003c\/p\u003e\n\u003cp\u003eThe separate refill tank is 20 in (50 cm) tall, and Nyos sizes it to hold about a week of RO water.\u003c\/p\u003e\n\n\u003ch2\u003eRecommended Equipment for the OPUS G2 440 (Sold Separately)\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtein skimmer:\u003c\/strong\u003e the \u003ca href=\"\/products\/quantum-220-protein-skimmer-nyos\"\u003eNyos Quantum 220\u003c\/a\u003e, whose 9.3 x 12.2 in footprint fits the 440's skimmer chamber. Compare all \u003ca href=\"\/collections\/nyos-protein-skimmers\"\u003eNyos Quantum protein skimmers\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReturn pump:\u003c\/strong\u003e about 525 GPH (2,000 L\/h), Nyos's recommendation for every OPUS G2 size. Shop \u003ca href=\"\/collections\/return-pumps\"\u003ereturn pumps\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCirculation:\u003c\/strong\u003e roughly 2,000 to 4,000 GPH of total flow from \u003ca href=\"\/collections\/powerheads\"\u003epowerheads\u003c\/a\u003e, which is 20 to 40 times the display volume per hour for a mixed reef.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating:\u003c\/strong\u003e as a rule of thumb, 350 to 575 W total, split across two \u003ca href=\"\/collections\/heaters-chillers-and-thermometers\"\u003eaquarium heaters\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto top-off:\u003c\/strong\u003e the refill tank is included but the controller is not. Add an \u003ca href=\"\/collections\/auto-top-off\"\u003eauto top-off system\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLighting:\u003c\/strong\u003e choose a reef light sized for a 49.2 in long, 21.7 in deep tank from our \u003ca href=\"\/collections\/aquarium-lighting\"\u003eaquarium lighting\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eNyos OPUS G2 440 Pro-Line FAQ\u003c\/h2\u003e\n\u003ch3\u003eWhat are the dimensions of the Nyos OPUS G2 440 Pro-Line?\u003c\/h3\u003e\n\u003cp\u003eThe display tank is 49.2 x 21.7 x 20.9 in (L x W x H). The Pro-Line cabinet is 52.6 x 25.8 x 35.4 in, and the complete system stands 4 ft 8 in (143 cm) tall. The sump inside the cabinet measures 23.6 x 20 x 13.8 in.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between the OPUS G2 440 Pro-Line and Slim-Line?\u003c\/h3\u003e\n\u003cp\u003eThe tank, sump, plumbing and refill tank are identical; only the cabinet changes. The Pro-Line cabinet (52.6 x 25.8 x 35.4 in) is larger than the tank for extra storage and adds BLUM 125° soft-close hinges, 38 mm solid doors, height-adjustable feet and a frame that hides the sand line. The Slim-Line cabinet (49.2 x 21.7 x 35.4 in) matches the tank footprint, uses standard hinges and costs less. See the \u003ca href=\"\/products\/opus-g2-440-slim-line-with-white-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 440 Slim-Line in white\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eHow much water does the OPUS G2 440 hold?\u003c\/h3\u003e\n\u003cp\u003eThe display holds 378 L (100 gal) gross and the sump holds 62 L (16.4 gal) at its 8 in operating level, for about 116 gallons of gross system volume before rock and sand displace some of it.\u003c\/p\u003e\n\u003ch3\u003eDoes the OPUS G2 440 come with an auto top-off?\u003c\/h3\u003e\n\u003cp\u003eNo. It includes a separate 6-gallon refill tank that holds about a week of RO water, but the auto top-off controller and sensor are sold separately. Evaporation shows up in the sump's return chamber, so that is where the ATO sensor goes.\u003c\/p\u003e\n\u003ch3\u003eWhich protein skimmer fits the OPUS G2 440?\u003c\/h3\u003e\n\u003cp\u003eWe recommend the \u003ca href=\"\/products\/quantum-220-protein-skimmer-nyos\"\u003eNyos Quantum 220\u003c\/a\u003e. Its 9.3 x 12.2 in footprint fits the 440's 13 x 20 in skimmer chamber, which holds a constant water level of about 8 in.\u003c\/p\u003e\n\u003cp\u003eCompare all four sizes and both cabinet lines in our \u003ca href=\"\/collections\/nyos-aquariums\"\u003eNyos OPUS G2 aquarium collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Nyos","offers":[{"title":"Default Title","offer_id":52469949661482,"sku":"OPG2-0838","price":3399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-drop-ship-opus-g2-440-pro-line-white-nyos-1256986739.jpg?v=1788465012"},{"product_id":"opus-g2-440-slim-line-with-grey-cabinet-aquarium-plumbing-sump-stand-kit","title":"OPUS G2 440 Slim-Line Aquarium (100 Gal) - Grey - Nyos","description":"\u003cp\u003eThe \u003cstrong\u003eNyos OPUS G2 440 Slim-Line\u003c\/strong\u003e in basalt grey is a complete reef aquarium system in the smallest possible footprint: a rimless, ultra-clear 100-gallon display with a hidden overflow on a cabinet that matches the tank exactly, plus ready-to-install PVC plumbing, a five-chamber sump and a separate refill tank.\u003c\/p\u003e\n\u003cp\u003eThe OPUS G2 440 is the flagship of the range: 125 cm (49.2 in) long, 378 L (100 gal) gross in the display, and the only OPUS G2 built with 12 mm (0.47 in) glass. Its four-foot footprint and 21.7 in depth give a mixed or SPS reef room to grow and a broader fish list room to swim, served by the largest OPUS sump at 62 L (16.4 gal).\u003c\/p\u003e\n\n\u003ch2\u003eNyos OPUS G2 440 Slim-Line Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHidden overflow:\u003c\/strong\u003e the overflow box sits outside the tank, recessed into the back pane, so no overflow box takes up aquascaping space inside the display and the back pane is easy to keep clean.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-clear glass on three sides:\u003c\/strong\u003e the front and both side panes are ultra-clear glass with a much weaker green tint than standard glass, so fish and coral colors look true.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear edges and a deep blue back pane:\u003c\/strong\u003e only transparent silicone is used in the display, and the tinted back pane creates a sense of depth once the lights are on.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRimless pool tank:\u003c\/strong\u003e 12 mm (0.47 in) glass with no top frame or cross bracing inside the display.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtra depth for aquascaping:\u003c\/strong\u003e 21.7 in (55 cm) front to back.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuiet, adjustable drain:\u003c\/strong\u003e the main drain has an adjustable valve to tune out drain noise, backed by a separate emergency drain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge skimmer chamber:\u003c\/strong\u003e 13 x 20 in, with a constant water level of about 8 in and room for a skimmer plus a media or algae reactor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in the EU\u003c\/strong\u003e with FSC-certified cabinet production.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eThe Slim-Line Cabinet in Basalt Grey\u003c\/h2\u003e\n\u003cp\u003eThe Slim-Line cabinet measures 49.2 x 21.7 x 35.4 in, exactly the footprint of the tank, so the whole system takes up no more floor space than the glass. It has three doors on standard hinges with a recessed push-to-open system, and brings the OPUS G2 design in at a lower price than the Pro-Line. The feet are not height-adjustable, so set it on a level floor. With the tank in place, the OPUS G2 440 Slim-Line stands 4 ft 9 in (145 cm) tall.\u003c\/p\u003e\n\u003cp\u003eThis listing is the basalt grey cabinet, with a matt finish. Both colors use moisture-resistant boards to EN 312 with a melamine resin coating that resists scratches and impacts, and waterproof pads inside the cabinet. The wood comes from verified legal sources under ISO 38200 and is produced in FSC-certified factories with 30% recycled material. Prefer white? See the \u003ca href=\"\/products\/opus-g2-440-slim-line-with-white-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 440 Slim-Line in white\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eOPUS G2 440 Slim-Line Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay tank (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e49.2 x 21.7 x 20.9 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay volume (gross)\u003c\/th\u003e\n\u003ctd\u003e378 L (100 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eGlass\u003c\/th\u003e\n\u003ctd\u003e12 mm (0.47 in); ultra-clear front and side panes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSlim-Line cabinet (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e49.2 x 21.7 x 35.4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTotal height, tank and cabinet\u003c\/th\u003e\n\u003ctd\u003e4 ft 9 in (145 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e23.6 x 20 x 13.8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump volume at 8 in water level\u003c\/th\u003e\n\u003ctd\u003e62 L (16.4 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSkimmer chamber footprint\u003c\/th\u003e\n\u003ctd\u003e13 x 20 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRefill tank\u003c\/th\u003e\n\u003ctd\u003e6.7 x 16.5 x 20 in, 22 L (6 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRecommended return pump\u003c\/th\u003e\n\u003ctd\u003e525 GPH (2,000 L\/h)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHinges\u003c\/th\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHeight-adjustable feet\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCabinet finish\u003c\/th\u003e\n\u003ctd\u003eBasalt grey, matt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOPUS G2 440 display tank with external overflow box and ultra-clear glass on three sides\u003c\/li\u003e\n\u003cli\u003eSlim-Line cabinet in basalt grey\u003c\/li\u003e\n\u003cli\u003eReady-to-install PVC plumbing with an adjustable main drain valve and an emergency drain\u003c\/li\u003e\n\u003cli\u003eFive-chamber sump with a nylon filter sock\u003c\/li\u003e\n\u003cli\u003eSeparate 6-gallon refill tank\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot included: return pump, protein skimmer, lighting, heaters, circulation pumps, auto top-off, rock and sand.\u003c\/p\u003e\n\n\u003ch2\u003eHow the OPUS G2 440 Sump Works\u003c\/h2\u003e\n\u003cp\u003eWater leaves the display through the hidden overflow into the sump's sedimentation chamber, then passes through the nylon filter sock. The third chamber is the main filter chamber: it holds a constant water level of about 8 in (21 cm) and has room for a protein skimmer and a reactor. A bubble trap follows, and the final return chamber is where the return pump sits and where evaporation shows up, so that is where an auto top-off replaces water from the refill tank.\u003c\/p\u003e\n\u003cp\u003eThe separate refill tank is 20 in (50 cm) tall, and Nyos sizes it to hold about a week of RO water.\u003c\/p\u003e\n\n\u003ch2\u003eRecommended Equipment for the OPUS G2 440 (Sold Separately)\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtein skimmer:\u003c\/strong\u003e the \u003ca href=\"\/products\/quantum-220-protein-skimmer-nyos\"\u003eNyos Quantum 220\u003c\/a\u003e, whose 9.3 x 12.2 in footprint fits the 440's skimmer chamber. Compare all \u003ca href=\"\/collections\/nyos-protein-skimmers\"\u003eNyos Quantum protein skimmers\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReturn pump:\u003c\/strong\u003e about 525 GPH (2,000 L\/h), Nyos's recommendation for every OPUS G2 size. Shop \u003ca href=\"\/collections\/return-pumps\"\u003ereturn pumps\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCirculation:\u003c\/strong\u003e roughly 2,000 to 4,000 GPH of total flow from \u003ca href=\"\/collections\/powerheads\"\u003epowerheads\u003c\/a\u003e, which is 20 to 40 times the display volume per hour for a mixed reef.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating:\u003c\/strong\u003e as a rule of thumb, 350 to 575 W total, split across two \u003ca href=\"\/collections\/heaters-chillers-and-thermometers\"\u003eaquarium heaters\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto top-off:\u003c\/strong\u003e the refill tank is included but the controller is not. Add an \u003ca href=\"\/collections\/auto-top-off\"\u003eauto top-off system\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLighting:\u003c\/strong\u003e choose a reef light sized for a 49.2 in long, 21.7 in deep tank from our \u003ca href=\"\/collections\/aquarium-lighting\"\u003eaquarium lighting\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eNyos OPUS G2 440 Slim-Line FAQ\u003c\/h2\u003e\n\u003ch3\u003eWhat are the dimensions of the Nyos OPUS G2 440 Slim-Line?\u003c\/h3\u003e\n\u003cp\u003eThe display tank is 49.2 x 21.7 x 20.9 in (L x W x H). The Slim-Line cabinet is 49.2 x 21.7 x 35.4 in, and the complete system stands 4 ft 9 in (145 cm) tall. The sump inside the cabinet measures 23.6 x 20 x 13.8 in.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between the OPUS G2 440 Pro-Line and Slim-Line?\u003c\/h3\u003e\n\u003cp\u003eThe tank, sump, plumbing and refill tank are identical; only the cabinet changes. The Pro-Line cabinet (52.6 x 25.8 x 35.4 in) is larger than the tank for extra storage and adds BLUM 125° soft-close hinges, 38 mm solid doors, height-adjustable feet and a frame that hides the sand line. The Slim-Line cabinet (49.2 x 21.7 x 35.4 in) matches the tank footprint, uses standard hinges and costs less. See the \u003ca href=\"\/products\/opus-g2-440-pro-line-with-grey-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 440 Pro-Line in basalt grey\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eHow much water does the OPUS G2 440 hold?\u003c\/h3\u003e\n\u003cp\u003eThe display holds 378 L (100 gal) gross and the sump holds 62 L (16.4 gal) at its 8 in operating level, for about 116 gallons of gross system volume before rock and sand displace some of it.\u003c\/p\u003e\n\u003ch3\u003eDoes the OPUS G2 440 come with an auto top-off?\u003c\/h3\u003e\n\u003cp\u003eNo. It includes a separate 6-gallon refill tank that holds about a week of RO water, but the auto top-off controller and sensor are sold separately. Evaporation shows up in the sump's return chamber, so that is where the ATO sensor goes.\u003c\/p\u003e\n\u003ch3\u003eWhich protein skimmer fits the OPUS G2 440?\u003c\/h3\u003e\n\u003cp\u003eWe recommend the \u003ca href=\"\/products\/quantum-220-protein-skimmer-nyos\"\u003eNyos Quantum 220\u003c\/a\u003e. Its 9.3 x 12.2 in footprint fits the 440's 13 x 20 in skimmer chamber, which holds a constant water level of about 8 in.\u003c\/p\u003e\n\u003cp\u003eCompare all four sizes and both cabinet lines in our \u003ca href=\"\/collections\/nyos-aquariums\"\u003eNyos OPUS G2 aquarium collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Nyos","offers":[{"title":"Default Title","offer_id":52469952217386,"sku":"OPG2-0807","price":2799.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-drop-ship-opus-g2-440-slim-line-grey-nyos-1256986789.jpg?v=1788464891"},{"product_id":"opus-g2-440-slim-line-with-white-cabinet-aquarium-plumbing-sump-stand-kit","title":"OPUS G2 440 Slim-Line Aquarium (100 Gal) - White - Nyos","description":"\u003cp\u003eThe \u003cstrong\u003eNyos OPUS G2 440 Slim-Line\u003c\/strong\u003e in white is a complete reef aquarium system in the smallest possible footprint: a rimless, ultra-clear 100-gallon display with a hidden overflow on a cabinet that matches the tank exactly, plus ready-to-install PVC plumbing, a five-chamber sump and a separate refill tank.\u003c\/p\u003e\n\u003cp\u003eThe OPUS G2 440 is the flagship of the range: 125 cm (49.2 in) long, 378 L (100 gal) gross in the display, and the only OPUS G2 built with 12 mm (0.47 in) glass. Its four-foot footprint and 21.7 in depth give a mixed or SPS reef room to grow and a broader fish list room to swim, served by the largest OPUS sump at 62 L (16.4 gal).\u003c\/p\u003e\n\n\u003ch2\u003eNyos OPUS G2 440 Slim-Line Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHidden overflow:\u003c\/strong\u003e the overflow box sits outside the tank, recessed into the back pane, so no overflow box takes up aquascaping space inside the display and the back pane is easy to keep clean.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-clear glass on three sides:\u003c\/strong\u003e the front and both side panes are ultra-clear glass with a much weaker green tint than standard glass, so fish and coral colors look true.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear edges and a deep blue back pane:\u003c\/strong\u003e only transparent silicone is used in the display, and the tinted back pane creates a sense of depth once the lights are on.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRimless pool tank:\u003c\/strong\u003e 12 mm (0.47 in) glass with no top frame or cross bracing inside the display.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtra depth for aquascaping:\u003c\/strong\u003e 21.7 in (55 cm) front to back.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuiet, adjustable drain:\u003c\/strong\u003e the main drain has an adjustable valve to tune out drain noise, backed by a separate emergency drain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge skimmer chamber:\u003c\/strong\u003e 13 x 20 in, with a constant water level of about 8 in and room for a skimmer plus a media or algae reactor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in the EU\u003c\/strong\u003e with FSC-certified cabinet production.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eThe Slim-Line Cabinet in White\u003c\/h2\u003e\n\u003cp\u003eThe Slim-Line cabinet measures 49.2 x 21.7 x 35.4 in, exactly the footprint of the tank, so the whole system takes up no more floor space than the glass. It has three doors on standard hinges with a recessed push-to-open system, and brings the OPUS G2 design in at a lower price than the Pro-Line. The feet are not height-adjustable, so set it on a level floor. With the tank in place, the OPUS G2 440 Slim-Line stands 4 ft 9 in (145 cm) tall.\u003c\/p\u003e\n\u003cp\u003eThis listing is the white cabinet, with a matt finish. Both colors use moisture-resistant boards to EN 312 with a melamine resin coating that resists scratches and impacts, and waterproof pads inside the cabinet. The wood comes from verified legal sources under ISO 38200 and is produced in FSC-certified factories with 30% recycled material. Prefer basalt grey? See the \u003ca href=\"\/products\/opus-g2-440-slim-line-with-grey-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 440 Slim-Line in basalt grey\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eOPUS G2 440 Slim-Line Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay tank (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e49.2 x 21.7 x 20.9 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay volume (gross)\u003c\/th\u003e\n\u003ctd\u003e378 L (100 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eGlass\u003c\/th\u003e\n\u003ctd\u003e12 mm (0.47 in); ultra-clear front and side panes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSlim-Line cabinet (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e49.2 x 21.7 x 35.4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTotal height, tank and cabinet\u003c\/th\u003e\n\u003ctd\u003e4 ft 9 in (145 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e23.6 x 20 x 13.8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump volume at 8 in water level\u003c\/th\u003e\n\u003ctd\u003e62 L (16.4 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSkimmer chamber footprint\u003c\/th\u003e\n\u003ctd\u003e13 x 20 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRefill tank\u003c\/th\u003e\n\u003ctd\u003e6.7 x 16.5 x 20 in, 22 L (6 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRecommended return pump\u003c\/th\u003e\n\u003ctd\u003e525 GPH (2,000 L\/h)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHinges\u003c\/th\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHeight-adjustable feet\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCabinet finish\u003c\/th\u003e\n\u003ctd\u003eWhite, matt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOPUS G2 440 display tank with external overflow box and ultra-clear glass on three sides\u003c\/li\u003e\n\u003cli\u003eSlim-Line cabinet in white\u003c\/li\u003e\n\u003cli\u003eReady-to-install PVC plumbing with an adjustable main drain valve and an emergency drain\u003c\/li\u003e\n\u003cli\u003eFive-chamber sump with a nylon filter sock\u003c\/li\u003e\n\u003cli\u003eSeparate 6-gallon refill tank\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot included: return pump, protein skimmer, lighting, heaters, circulation pumps, auto top-off, rock and sand.\u003c\/p\u003e\n\n\u003ch2\u003eHow the OPUS G2 440 Sump Works\u003c\/h2\u003e\n\u003cp\u003eWater leaves the display through the hidden overflow into the sump's sedimentation chamber, then passes through the nylon filter sock. The third chamber is the main filter chamber: it holds a constant water level of about 8 in (21 cm) and has room for a protein skimmer and a reactor. A bubble trap follows, and the final return chamber is where the return pump sits and where evaporation shows up, so that is where an auto top-off replaces water from the refill tank.\u003c\/p\u003e\n\u003cp\u003eThe separate refill tank is 20 in (50 cm) tall, and Nyos sizes it to hold about a week of RO water.\u003c\/p\u003e\n\n\u003ch2\u003eRecommended Equipment for the OPUS G2 440 (Sold Separately)\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtein skimmer:\u003c\/strong\u003e the \u003ca href=\"\/products\/quantum-220-protein-skimmer-nyos\"\u003eNyos Quantum 220\u003c\/a\u003e, whose 9.3 x 12.2 in footprint fits the 440's skimmer chamber. Compare all \u003ca href=\"\/collections\/nyos-protein-skimmers\"\u003eNyos Quantum protein skimmers\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReturn pump:\u003c\/strong\u003e about 525 GPH (2,000 L\/h), Nyos's recommendation for every OPUS G2 size. Shop \u003ca href=\"\/collections\/return-pumps\"\u003ereturn pumps\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCirculation:\u003c\/strong\u003e roughly 2,000 to 4,000 GPH of total flow from \u003ca href=\"\/collections\/powerheads\"\u003epowerheads\u003c\/a\u003e, which is 20 to 40 times the display volume per hour for a mixed reef.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating:\u003c\/strong\u003e as a rule of thumb, 350 to 575 W total, split across two \u003ca href=\"\/collections\/heaters-chillers-and-thermometers\"\u003eaquarium heaters\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto top-off:\u003c\/strong\u003e the refill tank is included but the controller is not. Add an \u003ca href=\"\/collections\/auto-top-off\"\u003eauto top-off system\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLighting:\u003c\/strong\u003e choose a reef light sized for a 49.2 in long, 21.7 in deep tank from our \u003ca href=\"\/collections\/aquarium-lighting\"\u003eaquarium lighting\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eNyos OPUS G2 440 Slim-Line FAQ\u003c\/h2\u003e\n\u003ch3\u003eWhat are the dimensions of the Nyos OPUS G2 440 Slim-Line?\u003c\/h3\u003e\n\u003cp\u003eThe display tank is 49.2 x 21.7 x 20.9 in (L x W x H). The Slim-Line cabinet is 49.2 x 21.7 x 35.4 in, and the complete system stands 4 ft 9 in (145 cm) tall. The sump inside the cabinet measures 23.6 x 20 x 13.8 in.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between the OPUS G2 440 Pro-Line and Slim-Line?\u003c\/h3\u003e\n\u003cp\u003eThe tank, sump, plumbing and refill tank are identical; only the cabinet changes. The Pro-Line cabinet (52.6 x 25.8 x 35.4 in) is larger than the tank for extra storage and adds BLUM 125° soft-close hinges, 38 mm solid doors, height-adjustable feet and a frame that hides the sand line. The Slim-Line cabinet (49.2 x 21.7 x 35.4 in) matches the tank footprint, uses standard hinges and costs less. See the \u003ca href=\"\/products\/opus-g2-440-pro-line-with-white-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 440 Pro-Line in white\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eHow much water does the OPUS G2 440 hold?\u003c\/h3\u003e\n\u003cp\u003eThe display holds 378 L (100 gal) gross and the sump holds 62 L (16.4 gal) at its 8 in operating level, for about 116 gallons of gross system volume before rock and sand displace some of it.\u003c\/p\u003e\n\u003ch3\u003eDoes the OPUS G2 440 come with an auto top-off?\u003c\/h3\u003e\n\u003cp\u003eNo. It includes a separate 6-gallon refill tank that holds about a week of RO water, but the auto top-off controller and sensor are sold separately. Evaporation shows up in the sump's return chamber, so that is where the ATO sensor goes.\u003c\/p\u003e\n\u003ch3\u003eWhich protein skimmer fits the OPUS G2 440?\u003c\/h3\u003e\n\u003cp\u003eWe recommend the \u003ca href=\"\/products\/quantum-220-protein-skimmer-nyos\"\u003eNyos Quantum 220\u003c\/a\u003e. Its 9.3 x 12.2 in footprint fits the 440's 13 x 20 in skimmer chamber, which holds a constant water level of about 8 in.\u003c\/p\u003e\n\u003cp\u003eCompare all four sizes and both cabinet lines in our \u003ca href=\"\/collections\/nyos-aquariums\"\u003eNyos OPUS G2 aquarium collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Nyos","offers":[{"title":"Default Title","offer_id":52469952676138,"sku":"OPG2-0814","price":2799.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-drop-ship-opus-g2-440-slim-line-white-nyos-1256986736.jpg?v=1788464772"},{"product_id":"opus-g2-200-pro-line-with-grey-cabinet-aquarium-plumbing-sump-stand-kit","title":"OPUS G2 200 Pro-Line Aquarium (44 Gal) - Grey - Nyos","description":"\u003cp\u003eThe \u003cstrong\u003eNyos OPUS G2 200 Pro-Line\u003c\/strong\u003e in basalt grey is a complete reef aquarium system: a rimless, ultra-clear 44-gallon display with a hidden overflow, the premium Pro-Line cabinet, ready-to-install PVC plumbing, a five-chamber sump and a separate refill tank.\u003c\/p\u003e\n\u003cp\u003eAt 21.7 in (55 cm) square, the OPUS G2 200 is the most compact tank in the series, holding 166 L (43.9 gal) gross in the display. The near-cube proportions suit a single rock island viewed from three sides, and it fits alcoves, room corners and offices where a 3- or 4-foot tank will not.\u003c\/p\u003e\n\n\u003ch2\u003eNyos OPUS G2 200 Pro-Line Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHidden overflow:\u003c\/strong\u003e the overflow box sits outside the tank, recessed into the back pane, so no overflow box takes up aquascaping space inside the display and the back pane is easy to keep clean.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-clear glass on three sides:\u003c\/strong\u003e the front and both side panes are ultra-clear glass with a much weaker green tint than standard glass, so fish and coral colors look true.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear edges and a deep blue back pane:\u003c\/strong\u003e only transparent silicone is used in the display, and the tinted back pane creates a sense of depth once the lights are on.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRimless pool tank:\u003c\/strong\u003e 10 mm (0.4 in) glass with no top frame or cross bracing inside the display.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtra depth for aquascaping:\u003c\/strong\u003e 21.7 in (55 cm) front to back.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuiet, adjustable drain:\u003c\/strong\u003e the main drain has an adjustable valve to tune out drain noise, backed by a separate emergency drain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge skimmer chamber:\u003c\/strong\u003e 7.9 x 20 in, with a constant water level of about 8 in and room for a skimmer plus a media or algae reactor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in the EU\u003c\/strong\u003e with FSC-certified cabinet production.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eThe Pro-Line Cabinet in Basalt Grey\u003c\/h2\u003e\n\u003cp\u003eThe Pro-Line cabinet measures 25 x 25.8 x 35.4 in, a larger footprint than the tank that leaves extra room for equipment and accessories. Its cubic design conceals the aquarium's bottom silicone seam and sand edge. The single door is a 38 mm solid board on BLUM 125° soft-close hinges and open with a recessed push-to-open system, and height-adjustable feet let you level the system precisely. With the tank in place, the OPUS G2 200 Pro-Line stands 4 ft 8 in (143 cm) tall.\u003c\/p\u003e\n\u003cp\u003eThis listing is the basalt grey cabinet, with a matt finish. Both colors use moisture-resistant boards to EN 312 with a melamine resin coating that resists scratches and impacts, and waterproof pads inside the cabinet. The wood comes from verified legal sources under ISO 38200 and is produced in FSC-certified factories with 30% recycled material. Prefer white? See the \u003ca href=\"\/products\/opus-g2-200-pro-line-with-white-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 200 Pro-Line in white\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eOPUS G2 200 Pro-Line Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay tank (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e21.7 x 21.7 x 20.9 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay volume (gross)\u003c\/th\u003e\n\u003ctd\u003e166 L (43.9 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eGlass\u003c\/th\u003e\n\u003ctd\u003e10 mm (0.4 in); ultra-clear front and side panes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePro-Line cabinet (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e25 x 25.8 x 35.4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTotal height, tank and cabinet\u003c\/th\u003e\n\u003ctd\u003e4 ft 8 in (143 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e13 x 20 x 13.8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump volume at 8 in water level\u003c\/th\u003e\n\u003ctd\u003e35 L (9.3 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSkimmer chamber footprint\u003c\/th\u003e\n\u003ctd\u003e7.9 x 20 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRefill tank\u003c\/th\u003e\n\u003ctd\u003e3.5 x 16.5 x 20 in, 16 L (4.2 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRecommended return pump\u003c\/th\u003e\n\u003ctd\u003e525 GPH (2,000 L\/h)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHinges\u003c\/th\u003e\n\u003ctd\u003eBLUM 125° soft-close\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHeight-adjustable feet\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCabinet finish\u003c\/th\u003e\n\u003ctd\u003eBasalt grey, matt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOPUS G2 200 display tank with external overflow box and ultra-clear glass on three sides\u003c\/li\u003e\n\u003cli\u003ePro-Line cabinet in basalt grey\u003c\/li\u003e\n\u003cli\u003eReady-to-install PVC plumbing with an adjustable main drain valve and an emergency drain\u003c\/li\u003e\n\u003cli\u003eFive-chamber sump with a nylon filter sock\u003c\/li\u003e\n\u003cli\u003eSeparate 4.2-gallon refill tank\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot included: return pump, protein skimmer, lighting, heaters, circulation pumps, auto top-off, rock and sand.\u003c\/p\u003e\n\n\u003ch2\u003eHow the OPUS G2 200 Sump Works\u003c\/h2\u003e\n\u003cp\u003eWater leaves the display through the hidden overflow into the sump's sedimentation chamber, then passes through the nylon filter sock. The third chamber is the main filter chamber: it holds a constant water level of about 8 in (21 cm) and has room for a protein skimmer and a reactor. A bubble trap follows, and the final return chamber is where the return pump sits and where evaporation shows up, so that is where an auto top-off replaces water from the refill tank.\u003c\/p\u003e\n\u003cp\u003eThe separate refill tank is 20 in (50 cm) tall, and Nyos sizes it to hold about a week of RO water.\u003c\/p\u003e\n\n\u003ch2\u003eRecommended Equipment for the OPUS G2 200 (Sold Separately)\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtein skimmer:\u003c\/strong\u003e the \u003ca href=\"\/products\/quantum-120-protein-skimmer-nyos\"\u003eNyos Quantum 120\u003c\/a\u003e, whose 5.9 x 8.3 in footprint fits the 200's skimmer chamber. Compare all \u003ca href=\"\/collections\/nyos-protein-skimmers\"\u003eNyos Quantum protein skimmers\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReturn pump:\u003c\/strong\u003e about 525 GPH (2,000 L\/h), Nyos's recommendation for every OPUS G2 size. Shop \u003ca href=\"\/collections\/return-pumps\"\u003ereturn pumps\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCirculation:\u003c\/strong\u003e roughly 900 to 1,750 GPH of total flow from \u003ca href=\"\/collections\/powerheads\"\u003epowerheads\u003c\/a\u003e, which is 20 to 40 times the display volume per hour for a mixed reef.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating:\u003c\/strong\u003e as a rule of thumb, 150 to 275 W total, split across two \u003ca href=\"\/collections\/heaters-chillers-and-thermometers\"\u003eaquarium heaters\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto top-off:\u003c\/strong\u003e the refill tank is included but the controller is not. Add an \u003ca href=\"\/collections\/auto-top-off\"\u003eauto top-off system\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLighting:\u003c\/strong\u003e choose a reef light sized for a 21.7 in long, 21.7 in deep tank from our \u003ca href=\"\/collections\/aquarium-lighting\"\u003eaquarium lighting\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eNyos OPUS G2 200 Pro-Line FAQ\u003c\/h2\u003e\n\u003ch3\u003eWhat are the dimensions of the Nyos OPUS G2 200 Pro-Line?\u003c\/h3\u003e\n\u003cp\u003eThe display tank is 21.7 x 21.7 x 20.9 in (L x W x H). The Pro-Line cabinet is 25 x 25.8 x 35.4 in, and the complete system stands 4 ft 8 in (143 cm) tall. The sump inside the cabinet measures 13 x 20 x 13.8 in.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between the OPUS G2 200 Pro-Line and Slim-Line?\u003c\/h3\u003e\n\u003cp\u003eThe tank, sump, plumbing and refill tank are identical; only the cabinet changes. The Pro-Line cabinet (25 x 25.8 x 35.4 in) is larger than the tank for extra storage and adds BLUM 125° soft-close hinges, 38 mm solid doors, height-adjustable feet and a frame that hides the sand line. The Slim-Line cabinet (21.7 x 21.7 x 35.4 in) matches the tank footprint, uses standard hinges and costs less. See the \u003ca href=\"\/products\/opus-g2-200-slim-line-with-grey-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 200 Slim-Line in basalt grey\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eHow much water does the OPUS G2 200 hold?\u003c\/h3\u003e\n\u003cp\u003eThe display holds 166 L (43.9 gal) gross and the sump holds 35 L (9.3 gal) at its 8 in operating level, for about 53 gallons of gross system volume before rock and sand displace some of it.\u003c\/p\u003e\n\u003ch3\u003eDoes the OPUS G2 200 come with an auto top-off?\u003c\/h3\u003e\n\u003cp\u003eNo. It includes a separate 4.2-gallon refill tank that holds about a week of RO water, but the auto top-off controller and sensor are sold separately. Evaporation shows up in the sump's return chamber, so that is where the ATO sensor goes.\u003c\/p\u003e\n\u003ch3\u003eWhich protein skimmer fits the OPUS G2 200?\u003c\/h3\u003e\n\u003cp\u003eWe recommend the \u003ca href=\"\/products\/quantum-120-protein-skimmer-nyos\"\u003eNyos Quantum 120\u003c\/a\u003e. Its 5.9 x 8.3 in footprint fits the 200's 7.9 x 20 in skimmer chamber, which holds a constant water level of about 8 in.\u003c\/p\u003e\n\u003cp\u003eCompare all four sizes and both cabinet lines in our \u003ca href=\"\/collections\/nyos-aquariums\"\u003eNyos OPUS G2 aquarium collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Nyos","offers":[{"title":"Default Title","offer_id":52469954838826,"sku":"OPG2-6397","price":2199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-drop-ship-opus-g2-200-pro-line-grey-nyos-1256986732.jpg?v=1788464652"},{"product_id":"opus-g2-200-pro-line-with-white-cabinet-aquarium-plumbing-sump-stand-kit","title":"OPUS G2 200 Pro-Line Aquarium (44 Gal) - White - Nyos","description":"\u003cp\u003eThe \u003cstrong\u003eNyos OPUS G2 200 Pro-Line\u003c\/strong\u003e in white is a complete reef aquarium system: a rimless, ultra-clear 44-gallon display with a hidden overflow, the premium Pro-Line cabinet, ready-to-install PVC plumbing, a five-chamber sump and a separate refill tank.\u003c\/p\u003e\n\u003cp\u003eAt 21.7 in (55 cm) square, the OPUS G2 200 is the most compact tank in the series, holding 166 L (43.9 gal) gross in the display. The near-cube proportions suit a single rock island viewed from three sides, and it fits alcoves, room corners and offices where a 3- or 4-foot tank will not.\u003c\/p\u003e\n\n\u003ch2\u003eNyos OPUS G2 200 Pro-Line Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHidden overflow:\u003c\/strong\u003e the overflow box sits outside the tank, recessed into the back pane, so no overflow box takes up aquascaping space inside the display and the back pane is easy to keep clean.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-clear glass on three sides:\u003c\/strong\u003e the front and both side panes are ultra-clear glass with a much weaker green tint than standard glass, so fish and coral colors look true.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear edges and a deep blue back pane:\u003c\/strong\u003e only transparent silicone is used in the display, and the tinted back pane creates a sense of depth once the lights are on.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRimless pool tank:\u003c\/strong\u003e 10 mm (0.4 in) glass with no top frame or cross bracing inside the display.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtra depth for aquascaping:\u003c\/strong\u003e 21.7 in (55 cm) front to back.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuiet, adjustable drain:\u003c\/strong\u003e the main drain has an adjustable valve to tune out drain noise, backed by a separate emergency drain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge skimmer chamber:\u003c\/strong\u003e 7.9 x 20 in, with a constant water level of about 8 in and room for a skimmer plus a media or algae reactor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in the EU\u003c\/strong\u003e with FSC-certified cabinet production.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eThe Pro-Line Cabinet in White\u003c\/h2\u003e\n\u003cp\u003eThe Pro-Line cabinet measures 25 x 25.8 x 35.4 in, a larger footprint than the tank that leaves extra room for equipment and accessories. Its cubic design conceals the aquarium's bottom silicone seam and sand edge. The single door is a 38 mm solid board on BLUM 125° soft-close hinges and open with a recessed push-to-open system, and height-adjustable feet let you level the system precisely. With the tank in place, the OPUS G2 200 Pro-Line stands 4 ft 8 in (143 cm) tall.\u003c\/p\u003e\n\u003cp\u003eThis listing is the white cabinet, with a matt finish. Both colors use moisture-resistant boards to EN 312 with a melamine resin coating that resists scratches and impacts, and waterproof pads inside the cabinet. The wood comes from verified legal sources under ISO 38200 and is produced in FSC-certified factories with 30% recycled material. Prefer basalt grey? See the \u003ca href=\"\/products\/opus-g2-200-pro-line-with-grey-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 200 Pro-Line in basalt grey\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eOPUS G2 200 Pro-Line Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay tank (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e21.7 x 21.7 x 20.9 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay volume (gross)\u003c\/th\u003e\n\u003ctd\u003e166 L (43.9 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eGlass\u003c\/th\u003e\n\u003ctd\u003e10 mm (0.4 in); ultra-clear front and side panes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePro-Line cabinet (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e25 x 25.8 x 35.4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTotal height, tank and cabinet\u003c\/th\u003e\n\u003ctd\u003e4 ft 8 in (143 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e13 x 20 x 13.8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump volume at 8 in water level\u003c\/th\u003e\n\u003ctd\u003e35 L (9.3 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSkimmer chamber footprint\u003c\/th\u003e\n\u003ctd\u003e7.9 x 20 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRefill tank\u003c\/th\u003e\n\u003ctd\u003e3.5 x 16.5 x 20 in, 16 L (4.2 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRecommended return pump\u003c\/th\u003e\n\u003ctd\u003e525 GPH (2,000 L\/h)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHinges\u003c\/th\u003e\n\u003ctd\u003eBLUM 125° soft-close\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHeight-adjustable feet\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCabinet finish\u003c\/th\u003e\n\u003ctd\u003eWhite, matt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOPUS G2 200 display tank with external overflow box and ultra-clear glass on three sides\u003c\/li\u003e\n\u003cli\u003ePro-Line cabinet in white\u003c\/li\u003e\n\u003cli\u003eReady-to-install PVC plumbing with an adjustable main drain valve and an emergency drain\u003c\/li\u003e\n\u003cli\u003eFive-chamber sump with a nylon filter sock\u003c\/li\u003e\n\u003cli\u003eSeparate 4.2-gallon refill tank\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot included: return pump, protein skimmer, lighting, heaters, circulation pumps, auto top-off, rock and sand.\u003c\/p\u003e\n\n\u003ch2\u003eHow the OPUS G2 200 Sump Works\u003c\/h2\u003e\n\u003cp\u003eWater leaves the display through the hidden overflow into the sump's sedimentation chamber, then passes through the nylon filter sock. The third chamber is the main filter chamber: it holds a constant water level of about 8 in (21 cm) and has room for a protein skimmer and a reactor. A bubble trap follows, and the final return chamber is where the return pump sits and where evaporation shows up, so that is where an auto top-off replaces water from the refill tank.\u003c\/p\u003e\n\u003cp\u003eThe separate refill tank is 20 in (50 cm) tall, and Nyos sizes it to hold about a week of RO water.\u003c\/p\u003e\n\n\u003ch2\u003eRecommended Equipment for the OPUS G2 200 (Sold Separately)\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtein skimmer:\u003c\/strong\u003e the \u003ca href=\"\/products\/quantum-120-protein-skimmer-nyos\"\u003eNyos Quantum 120\u003c\/a\u003e, whose 5.9 x 8.3 in footprint fits the 200's skimmer chamber. Compare all \u003ca href=\"\/collections\/nyos-protein-skimmers\"\u003eNyos Quantum protein skimmers\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReturn pump:\u003c\/strong\u003e about 525 GPH (2,000 L\/h), Nyos's recommendation for every OPUS G2 size. Shop \u003ca href=\"\/collections\/return-pumps\"\u003ereturn pumps\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCirculation:\u003c\/strong\u003e roughly 900 to 1,750 GPH of total flow from \u003ca href=\"\/collections\/powerheads\"\u003epowerheads\u003c\/a\u003e, which is 20 to 40 times the display volume per hour for a mixed reef.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating:\u003c\/strong\u003e as a rule of thumb, 150 to 275 W total, split across two \u003ca href=\"\/collections\/heaters-chillers-and-thermometers\"\u003eaquarium heaters\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto top-off:\u003c\/strong\u003e the refill tank is included but the controller is not. Add an \u003ca href=\"\/collections\/auto-top-off\"\u003eauto top-off system\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLighting:\u003c\/strong\u003e choose a reef light sized for a 21.7 in long, 21.7 in deep tank from our \u003ca href=\"\/collections\/aquarium-lighting\"\u003eaquarium lighting\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eNyos OPUS G2 200 Pro-Line FAQ\u003c\/h2\u003e\n\u003ch3\u003eWhat are the dimensions of the Nyos OPUS G2 200 Pro-Line?\u003c\/h3\u003e\n\u003cp\u003eThe display tank is 21.7 x 21.7 x 20.9 in (L x W x H). The Pro-Line cabinet is 25 x 25.8 x 35.4 in, and the complete system stands 4 ft 8 in (143 cm) tall. The sump inside the cabinet measures 13 x 20 x 13.8 in.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between the OPUS G2 200 Pro-Line and Slim-Line?\u003c\/h3\u003e\n\u003cp\u003eThe tank, sump, plumbing and refill tank are identical; only the cabinet changes. The Pro-Line cabinet (25 x 25.8 x 35.4 in) is larger than the tank for extra storage and adds BLUM 125° soft-close hinges, 38 mm solid doors, height-adjustable feet and a frame that hides the sand line. The Slim-Line cabinet (21.7 x 21.7 x 35.4 in) matches the tank footprint, uses standard hinges and costs less. See the \u003ca href=\"\/products\/opus-g2-200-slim-line-with-white-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 200 Slim-Line in white\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eHow much water does the OPUS G2 200 hold?\u003c\/h3\u003e\n\u003cp\u003eThe display holds 166 L (43.9 gal) gross and the sump holds 35 L (9.3 gal) at its 8 in operating level, for about 53 gallons of gross system volume before rock and sand displace some of it.\u003c\/p\u003e\n\u003ch3\u003eDoes the OPUS G2 200 come with an auto top-off?\u003c\/h3\u003e\n\u003cp\u003eNo. It includes a separate 4.2-gallon refill tank that holds about a week of RO water, but the auto top-off controller and sensor are sold separately. Evaporation shows up in the sump's return chamber, so that is where the ATO sensor goes.\u003c\/p\u003e\n\u003ch3\u003eWhich protein skimmer fits the OPUS G2 200?\u003c\/h3\u003e\n\u003cp\u003eWe recommend the \u003ca href=\"\/products\/quantum-120-protein-skimmer-nyos\"\u003eNyos Quantum 120\u003c\/a\u003e. Its 5.9 x 8.3 in footprint fits the 200's 7.9 x 20 in skimmer chamber, which holds a constant water level of about 8 in.\u003c\/p\u003e\n\u003cp\u003eCompare all four sizes and both cabinet lines in our \u003ca href=\"\/collections\/nyos-aquariums\"\u003eNyos OPUS G2 aquarium collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Nyos","offers":[{"title":"Default Title","offer_id":52469958213930,"sku":"OPG2-6380","price":2199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-drop-ship-opus-g2-200-pro-line-white-nyos-1256986730.jpg?v=1788464530"},{"product_id":"opus-g2-200-slim-line-with-grey-cabinet-aquarium-plumbing-sump-stand-kit","title":"OPUS G2 200 Slim-Line Aquarium (44 Gal) - Grey - Nyos","description":"\u003cp\u003eThe \u003cstrong\u003eNyos OPUS G2 200 Slim-Line\u003c\/strong\u003e in basalt grey is a complete reef aquarium system in the smallest possible footprint: a rimless, ultra-clear 44-gallon display with a hidden overflow on a cabinet that matches the tank exactly, plus ready-to-install PVC plumbing, a five-chamber sump and a separate refill tank.\u003c\/p\u003e\n\u003cp\u003eAt 21.7 in (55 cm) square, the OPUS G2 200 is the most compact tank in the series, holding 166 L (43.9 gal) gross in the display. The near-cube proportions suit a single rock island viewed from three sides, and it fits alcoves, room corners and offices where a 3- or 4-foot tank will not.\u003c\/p\u003e\n\n\u003ch2\u003eNyos OPUS G2 200 Slim-Line Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHidden overflow:\u003c\/strong\u003e the overflow box sits outside the tank, recessed into the back pane, so no overflow box takes up aquascaping space inside the display and the back pane is easy to keep clean.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-clear glass on three sides:\u003c\/strong\u003e the front and both side panes are ultra-clear glass with a much weaker green tint than standard glass, so fish and coral colors look true.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear edges and a deep blue back pane:\u003c\/strong\u003e only transparent silicone is used in the display, and the tinted back pane creates a sense of depth once the lights are on.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRimless pool tank:\u003c\/strong\u003e 10 mm (0.4 in) glass with no top frame or cross bracing inside the display.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtra depth for aquascaping:\u003c\/strong\u003e 21.7 in (55 cm) front to back.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuiet, adjustable drain:\u003c\/strong\u003e the main drain has an adjustable valve to tune out drain noise, backed by a separate emergency drain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge skimmer chamber:\u003c\/strong\u003e 7.9 x 20 in, with a constant water level of about 8 in and room for a skimmer plus a media or algae reactor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in the EU\u003c\/strong\u003e with FSC-certified cabinet production.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eThe Slim-Line Cabinet in Basalt Grey\u003c\/h2\u003e\n\u003cp\u003eThe Slim-Line cabinet measures 21.7 x 21.7 x 35.4 in, exactly the footprint of the tank, so the whole system takes up no more floor space than the glass. It has a single door on standard hinges with a recessed push-to-open system, and brings the OPUS G2 design in at a lower price than the Pro-Line. The feet are not height-adjustable, so set it on a level floor. With the tank in place, the OPUS G2 200 Slim-Line stands 4 ft 9 in (145 cm) tall.\u003c\/p\u003e\n\u003cp\u003eThis listing is the basalt grey cabinet, with a matt finish. Both colors use moisture-resistant boards to EN 312 with a melamine resin coating that resists scratches and impacts, and waterproof pads inside the cabinet. The wood comes from verified legal sources under ISO 38200 and is produced in FSC-certified factories with 30% recycled material. Prefer white? See the \u003ca href=\"\/products\/opus-g2-200-slim-line-with-white-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 200 Slim-Line in white\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eOPUS G2 200 Slim-Line Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay tank (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e21.7 x 21.7 x 20.9 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay volume (gross)\u003c\/th\u003e\n\u003ctd\u003e166 L (43.9 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eGlass\u003c\/th\u003e\n\u003ctd\u003e10 mm (0.4 in); ultra-clear front and side panes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSlim-Line cabinet (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e21.7 x 21.7 x 35.4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTotal height, tank and cabinet\u003c\/th\u003e\n\u003ctd\u003e4 ft 9 in (145 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e13 x 20 x 13.8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump volume at 8 in water level\u003c\/th\u003e\n\u003ctd\u003e35 L (9.3 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSkimmer chamber footprint\u003c\/th\u003e\n\u003ctd\u003e7.9 x 20 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRefill tank\u003c\/th\u003e\n\u003ctd\u003e3.5 x 16.5 x 20 in, 16 L (4.2 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRecommended return pump\u003c\/th\u003e\n\u003ctd\u003e525 GPH (2,000 L\/h)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHinges\u003c\/th\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHeight-adjustable feet\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCabinet finish\u003c\/th\u003e\n\u003ctd\u003eBasalt grey, matt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOPUS G2 200 display tank with external overflow box and ultra-clear glass on three sides\u003c\/li\u003e\n\u003cli\u003eSlim-Line cabinet in basalt grey\u003c\/li\u003e\n\u003cli\u003eReady-to-install PVC plumbing with an adjustable main drain valve and an emergency drain\u003c\/li\u003e\n\u003cli\u003eFive-chamber sump with a nylon filter sock\u003c\/li\u003e\n\u003cli\u003eSeparate 4.2-gallon refill tank\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot included: return pump, protein skimmer, lighting, heaters, circulation pumps, auto top-off, rock and sand.\u003c\/p\u003e\n\n\u003ch2\u003eHow the OPUS G2 200 Sump Works\u003c\/h2\u003e\n\u003cp\u003eWater leaves the display through the hidden overflow into the sump's sedimentation chamber, then passes through the nylon filter sock. The third chamber is the main filter chamber: it holds a constant water level of about 8 in (21 cm) and has room for a protein skimmer and a reactor. A bubble trap follows, and the final return chamber is where the return pump sits and where evaporation shows up, so that is where an auto top-off replaces water from the refill tank.\u003c\/p\u003e\n\u003cp\u003eThe separate refill tank is 20 in (50 cm) tall, and Nyos sizes it to hold about a week of RO water.\u003c\/p\u003e\n\n\u003ch2\u003eRecommended Equipment for the OPUS G2 200 (Sold Separately)\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtein skimmer:\u003c\/strong\u003e the \u003ca href=\"\/products\/quantum-120-protein-skimmer-nyos\"\u003eNyos Quantum 120\u003c\/a\u003e, whose 5.9 x 8.3 in footprint fits the 200's skimmer chamber. Compare all \u003ca href=\"\/collections\/nyos-protein-skimmers\"\u003eNyos Quantum protein skimmers\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReturn pump:\u003c\/strong\u003e about 525 GPH (2,000 L\/h), Nyos's recommendation for every OPUS G2 size. Shop \u003ca href=\"\/collections\/return-pumps\"\u003ereturn pumps\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCirculation:\u003c\/strong\u003e roughly 900 to 1,750 GPH of total flow from \u003ca href=\"\/collections\/powerheads\"\u003epowerheads\u003c\/a\u003e, which is 20 to 40 times the display volume per hour for a mixed reef.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating:\u003c\/strong\u003e as a rule of thumb, 150 to 275 W total, split across two \u003ca href=\"\/collections\/heaters-chillers-and-thermometers\"\u003eaquarium heaters\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto top-off:\u003c\/strong\u003e the refill tank is included but the controller is not. Add an \u003ca href=\"\/collections\/auto-top-off\"\u003eauto top-off system\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLighting:\u003c\/strong\u003e choose a reef light sized for a 21.7 in long, 21.7 in deep tank from our \u003ca href=\"\/collections\/aquarium-lighting\"\u003eaquarium lighting\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eNyos OPUS G2 200 Slim-Line FAQ\u003c\/h2\u003e\n\u003ch3\u003eWhat are the dimensions of the Nyos OPUS G2 200 Slim-Line?\u003c\/h3\u003e\n\u003cp\u003eThe display tank is 21.7 x 21.7 x 20.9 in (L x W x H). The Slim-Line cabinet is 21.7 x 21.7 x 35.4 in, and the complete system stands 4 ft 9 in (145 cm) tall. The sump inside the cabinet measures 13 x 20 x 13.8 in.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between the OPUS G2 200 Pro-Line and Slim-Line?\u003c\/h3\u003e\n\u003cp\u003eThe tank, sump, plumbing and refill tank are identical; only the cabinet changes. The Pro-Line cabinet (25 x 25.8 x 35.4 in) is larger than the tank for extra storage and adds BLUM 125° soft-close hinges, 38 mm solid doors, height-adjustable feet and a frame that hides the sand line. The Slim-Line cabinet (21.7 x 21.7 x 35.4 in) matches the tank footprint, uses standard hinges and costs less. See the \u003ca href=\"\/products\/opus-g2-200-pro-line-with-grey-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 200 Pro-Line in basalt grey\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eHow much water does the OPUS G2 200 hold?\u003c\/h3\u003e\n\u003cp\u003eThe display holds 166 L (43.9 gal) gross and the sump holds 35 L (9.3 gal) at its 8 in operating level, for about 53 gallons of gross system volume before rock and sand displace some of it.\u003c\/p\u003e\n\u003ch3\u003eDoes the OPUS G2 200 come with an auto top-off?\u003c\/h3\u003e\n\u003cp\u003eNo. It includes a separate 4.2-gallon refill tank that holds about a week of RO water, but the auto top-off controller and sensor are sold separately. Evaporation shows up in the sump's return chamber, so that is where the ATO sensor goes.\u003c\/p\u003e\n\u003ch3\u003eWhich protein skimmer fits the OPUS G2 200?\u003c\/h3\u003e\n\u003cp\u003eWe recommend the \u003ca href=\"\/products\/quantum-120-protein-skimmer-nyos\"\u003eNyos Quantum 120\u003c\/a\u003e. Its 5.9 x 8.3 in footprint fits the 200's 7.9 x 20 in skimmer chamber, which holds a constant water level of about 8 in.\u003c\/p\u003e\n\u003cp\u003eCompare all four sizes and both cabinet lines in our \u003ca href=\"\/collections\/nyos-aquariums\"\u003eNyos OPUS G2 aquarium collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Nyos","offers":[{"title":"Default Title","offer_id":52469960474922,"sku":"OPG2-0128","price":1799.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-drop-ship-opus-g2-200-slim-line-grey-nyos-1256986779.jpg?v=1788464412"},{"product_id":"opus-g2-200-slim-line-with-white-cabinet-aquarium-plumbing-sump-stand-kit","title":"OPUS G2 200 Slim-Line Aquarium (44 Gal) - White - Nyos","description":"\u003cp\u003eThe \u003cstrong\u003eNyos OPUS G2 200 Slim-Line\u003c\/strong\u003e in white is a complete reef aquarium system in the smallest possible footprint: a rimless, ultra-clear 44-gallon display with a hidden overflow on a cabinet that matches the tank exactly, plus ready-to-install PVC plumbing, a five-chamber sump and a separate refill tank.\u003c\/p\u003e\n\u003cp\u003eAt 21.7 in (55 cm) square, the OPUS G2 200 is the most compact tank in the series, holding 166 L (43.9 gal) gross in the display. The near-cube proportions suit a single rock island viewed from three sides, and it fits alcoves, room corners and offices where a 3- or 4-foot tank will not.\u003c\/p\u003e\n\n\u003ch2\u003eNyos OPUS G2 200 Slim-Line Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHidden overflow:\u003c\/strong\u003e the overflow box sits outside the tank, recessed into the back pane, so no overflow box takes up aquascaping space inside the display and the back pane is easy to keep clean.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-clear glass on three sides:\u003c\/strong\u003e the front and both side panes are ultra-clear glass with a much weaker green tint than standard glass, so fish and coral colors look true.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear edges and a deep blue back pane:\u003c\/strong\u003e only transparent silicone is used in the display, and the tinted back pane creates a sense of depth once the lights are on.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRimless pool tank:\u003c\/strong\u003e 10 mm (0.4 in) glass with no top frame or cross bracing inside the display.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtra depth for aquascaping:\u003c\/strong\u003e 21.7 in (55 cm) front to back.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuiet, adjustable drain:\u003c\/strong\u003e the main drain has an adjustable valve to tune out drain noise, backed by a separate emergency drain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge skimmer chamber:\u003c\/strong\u003e 7.9 x 20 in, with a constant water level of about 8 in and room for a skimmer plus a media or algae reactor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in the EU\u003c\/strong\u003e with FSC-certified cabinet production.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eThe Slim-Line Cabinet in White\u003c\/h2\u003e\n\u003cp\u003eThe Slim-Line cabinet measures 21.7 x 21.7 x 35.4 in, exactly the footprint of the tank, so the whole system takes up no more floor space than the glass. It has a single door on standard hinges with a recessed push-to-open system, and brings the OPUS G2 design in at a lower price than the Pro-Line. The feet are not height-adjustable, so set it on a level floor. With the tank in place, the OPUS G2 200 Slim-Line stands 4 ft 9 in (145 cm) tall.\u003c\/p\u003e\n\u003cp\u003eThis listing is the white cabinet, with a matt finish. Both colors use moisture-resistant boards to EN 312 with a melamine resin coating that resists scratches and impacts, and waterproof pads inside the cabinet. The wood comes from verified legal sources under ISO 38200 and is produced in FSC-certified factories with 30% recycled material. Prefer basalt grey? See the \u003ca href=\"\/products\/opus-g2-200-slim-line-with-grey-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 200 Slim-Line in basalt grey\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eOPUS G2 200 Slim-Line Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay tank (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e21.7 x 21.7 x 20.9 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay volume (gross)\u003c\/th\u003e\n\u003ctd\u003e166 L (43.9 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eGlass\u003c\/th\u003e\n\u003ctd\u003e10 mm (0.4 in); ultra-clear front and side panes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSlim-Line cabinet (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e21.7 x 21.7 x 35.4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTotal height, tank and cabinet\u003c\/th\u003e\n\u003ctd\u003e4 ft 9 in (145 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e13 x 20 x 13.8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump volume at 8 in water level\u003c\/th\u003e\n\u003ctd\u003e35 L (9.3 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSkimmer chamber footprint\u003c\/th\u003e\n\u003ctd\u003e7.9 x 20 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRefill tank\u003c\/th\u003e\n\u003ctd\u003e3.5 x 16.5 x 20 in, 16 L (4.2 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRecommended return pump\u003c\/th\u003e\n\u003ctd\u003e525 GPH (2,000 L\/h)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHinges\u003c\/th\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHeight-adjustable feet\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCabinet finish\u003c\/th\u003e\n\u003ctd\u003eWhite, matt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOPUS G2 200 display tank with external overflow box and ultra-clear glass on three sides\u003c\/li\u003e\n\u003cli\u003eSlim-Line cabinet in white\u003c\/li\u003e\n\u003cli\u003eReady-to-install PVC plumbing with an adjustable main drain valve and an emergency drain\u003c\/li\u003e\n\u003cli\u003eFive-chamber sump with a nylon filter sock\u003c\/li\u003e\n\u003cli\u003eSeparate 4.2-gallon refill tank\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot included: return pump, protein skimmer, lighting, heaters, circulation pumps, auto top-off, rock and sand.\u003c\/p\u003e\n\n\u003ch2\u003eHow the OPUS G2 200 Sump Works\u003c\/h2\u003e\n\u003cp\u003eWater leaves the display through the hidden overflow into the sump's sedimentation chamber, then passes through the nylon filter sock. The third chamber is the main filter chamber: it holds a constant water level of about 8 in (21 cm) and has room for a protein skimmer and a reactor. A bubble trap follows, and the final return chamber is where the return pump sits and where evaporation shows up, so that is where an auto top-off replaces water from the refill tank.\u003c\/p\u003e\n\u003cp\u003eThe separate refill tank is 20 in (50 cm) tall, and Nyos sizes it to hold about a week of RO water.\u003c\/p\u003e\n\n\u003ch2\u003eRecommended Equipment for the OPUS G2 200 (Sold Separately)\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtein skimmer:\u003c\/strong\u003e the \u003ca href=\"\/products\/quantum-120-protein-skimmer-nyos\"\u003eNyos Quantum 120\u003c\/a\u003e, whose 5.9 x 8.3 in footprint fits the 200's skimmer chamber. Compare all \u003ca href=\"\/collections\/nyos-protein-skimmers\"\u003eNyos Quantum protein skimmers\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReturn pump:\u003c\/strong\u003e about 525 GPH (2,000 L\/h), Nyos's recommendation for every OPUS G2 size. Shop \u003ca href=\"\/collections\/return-pumps\"\u003ereturn pumps\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCirculation:\u003c\/strong\u003e roughly 900 to 1,750 GPH of total flow from \u003ca href=\"\/collections\/powerheads\"\u003epowerheads\u003c\/a\u003e, which is 20 to 40 times the display volume per hour for a mixed reef.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating:\u003c\/strong\u003e as a rule of thumb, 150 to 275 W total, split across two \u003ca href=\"\/collections\/heaters-chillers-and-thermometers\"\u003eaquarium heaters\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto top-off:\u003c\/strong\u003e the refill tank is included but the controller is not. Add an \u003ca href=\"\/collections\/auto-top-off\"\u003eauto top-off system\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLighting:\u003c\/strong\u003e choose a reef light sized for a 21.7 in long, 21.7 in deep tank from our \u003ca href=\"\/collections\/aquarium-lighting\"\u003eaquarium lighting\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eNyos OPUS G2 200 Slim-Line FAQ\u003c\/h2\u003e\n\u003ch3\u003eWhat are the dimensions of the Nyos OPUS G2 200 Slim-Line?\u003c\/h3\u003e\n\u003cp\u003eThe display tank is 21.7 x 21.7 x 20.9 in (L x W x H). The Slim-Line cabinet is 21.7 x 21.7 x 35.4 in, and the complete system stands 4 ft 9 in (145 cm) tall. The sump inside the cabinet measures 13 x 20 x 13.8 in.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between the OPUS G2 200 Pro-Line and Slim-Line?\u003c\/h3\u003e\n\u003cp\u003eThe tank, sump, plumbing and refill tank are identical; only the cabinet changes. The Pro-Line cabinet (25 x 25.8 x 35.4 in) is larger than the tank for extra storage and adds BLUM 125° soft-close hinges, 38 mm solid doors, height-adjustable feet and a frame that hides the sand line. The Slim-Line cabinet (21.7 x 21.7 x 35.4 in) matches the tank footprint, uses standard hinges and costs less. See the \u003ca href=\"\/products\/opus-g2-200-pro-line-with-white-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 200 Pro-Line in white\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eHow much water does the OPUS G2 200 hold?\u003c\/h3\u003e\n\u003cp\u003eThe display holds 166 L (43.9 gal) gross and the sump holds 35 L (9.3 gal) at its 8 in operating level, for about 53 gallons of gross system volume before rock and sand displace some of it.\u003c\/p\u003e\n\u003ch3\u003eDoes the OPUS G2 200 come with an auto top-off?\u003c\/h3\u003e\n\u003cp\u003eNo. It includes a separate 4.2-gallon refill tank that holds about a week of RO water, but the auto top-off controller and sensor are sold separately. Evaporation shows up in the sump's return chamber, so that is where the ATO sensor goes.\u003c\/p\u003e\n\u003ch3\u003eWhich protein skimmer fits the OPUS G2 200?\u003c\/h3\u003e\n\u003cp\u003eWe recommend the \u003ca href=\"\/products\/quantum-120-protein-skimmer-nyos\"\u003eNyos Quantum 120\u003c\/a\u003e. Its 5.9 x 8.3 in footprint fits the 200's 7.9 x 20 in skimmer chamber, which holds a constant water level of about 8 in.\u003c\/p\u003e\n\u003cp\u003eCompare all four sizes and both cabinet lines in our \u003ca href=\"\/collections\/nyos-aquariums\"\u003eNyos OPUS G2 aquarium collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Nyos","offers":[{"title":"Default Title","offer_id":52469961883946,"sku":"OPG2-0111","price":1799.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-drop-ship-opus-g2-200-slim-line-white-nyos-1256986742.jpg?v=1788464293"},{"product_id":"opus-g2-250-pro-line-with-grey-cabinet-aquarium-plumbing-sump-stand-kit","title":"OPUS G2 250 Pro-Line Aquarium (54 Gal) - Grey - Nyos","description":"\u003cp\u003eThe \u003cstrong\u003eNyos OPUS G2 250 Pro-Line\u003c\/strong\u003e in basalt grey is a complete reef aquarium system: a rimless, ultra-clear 54-gallon display with a hidden overflow, the premium Pro-Line cabinet, ready-to-install PVC plumbing, a five-chamber sump and a separate refill tank.\u003c\/p\u003e\n\u003cp\u003eThe OPUS G2 250 stretches the footprint to 27.6 in (70 cm) long at the same 21.7 in depth, for 204 L (53.9 gal) gross in the display. The extra length gives fish more room to swim side to side than the 200 and leaves space for two rock structures with open sand between them, in a footprint still under 28 inches wide.\u003c\/p\u003e\n\n\u003ch2\u003eNyos OPUS G2 250 Pro-Line Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHidden overflow:\u003c\/strong\u003e the overflow box sits outside the tank, recessed into the back pane, so no overflow box takes up aquascaping space inside the display and the back pane is easy to keep clean.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-clear glass on three sides:\u003c\/strong\u003e the front and both side panes are ultra-clear glass with a much weaker green tint than standard glass, so fish and coral colors look true.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear edges and a deep blue back pane:\u003c\/strong\u003e only transparent silicone is used in the display, and the tinted back pane creates a sense of depth once the lights are on.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRimless pool tank:\u003c\/strong\u003e 10 mm (0.4 in) glass with no top frame or cross bracing inside the display.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtra depth for aquascaping:\u003c\/strong\u003e 21.7 in (55 cm) front to back.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuiet, adjustable drain:\u003c\/strong\u003e the main drain has an adjustable valve to tune out drain noise, backed by a separate emergency drain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge skimmer chamber:\u003c\/strong\u003e 9.5 x 20 in, with a constant water level of about 8 in and room for a skimmer plus a media or algae reactor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in the EU\u003c\/strong\u003e with FSC-certified cabinet production.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eThe Pro-Line Cabinet in Basalt Grey\u003c\/h2\u003e\n\u003cp\u003eThe Pro-Line cabinet measures 30.9 x 25.8 x 35.4 in, a larger footprint than the tank that leaves extra room for equipment and accessories. Its cubic design conceals the aquarium's bottom silicone seam and sand edge. Both doors are 38 mm solid boards on BLUM 125° soft-close hinges and open with a recessed push-to-open system, and height-adjustable feet let you level the system precisely. With the tank in place, the OPUS G2 250 Pro-Line stands 4 ft 7 in (141 cm) tall.\u003c\/p\u003e\n\u003cp\u003eThis listing is the basalt grey cabinet, with a matt finish. Both colors use moisture-resistant boards to EN 312 with a melamine resin coating that resists scratches and impacts, and waterproof pads inside the cabinet. The wood comes from verified legal sources under ISO 38200 and is produced in FSC-certified factories with 30% recycled material. Prefer white? See the \u003ca href=\"\/products\/opus-g2-250-pro-line-with-white-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 250 Pro-Line in white\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eOPUS G2 250 Pro-Line Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay tank (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e27.6 x 21.7 x 20.9 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay volume (gross)\u003c\/th\u003e\n\u003ctd\u003e204 L (53.9 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eGlass\u003c\/th\u003e\n\u003ctd\u003e10 mm (0.4 in); ultra-clear front and side panes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePro-Line cabinet (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e30.9 x 25.8 x 35.4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTotal height, tank and cabinet\u003c\/th\u003e\n\u003ctd\u003e4 ft 7 in (141 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e15.8 x 20 x 13.8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump volume at 8 in water level\u003c\/th\u003e\n\u003ctd\u003e42 L (11.1 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSkimmer chamber footprint\u003c\/th\u003e\n\u003ctd\u003e9.5 x 20 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRefill tank\u003c\/th\u003e\n\u003ctd\u003e4.3 x 16.5 x 20 in, 20 L (5.3 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRecommended return pump\u003c\/th\u003e\n\u003ctd\u003e525 GPH (2,000 L\/h)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHinges\u003c\/th\u003e\n\u003ctd\u003eBLUM 125° soft-close\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHeight-adjustable feet\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCabinet finish\u003c\/th\u003e\n\u003ctd\u003eBasalt grey, matt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOPUS G2 250 display tank with external overflow box and ultra-clear glass on three sides\u003c\/li\u003e\n\u003cli\u003ePro-Line cabinet in basalt grey\u003c\/li\u003e\n\u003cli\u003eReady-to-install PVC plumbing with an adjustable main drain valve and an emergency drain\u003c\/li\u003e\n\u003cli\u003eFive-chamber sump with a nylon filter sock\u003c\/li\u003e\n\u003cli\u003eSeparate 5.3-gallon refill tank\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot included: return pump, protein skimmer, lighting, heaters, circulation pumps, auto top-off, rock and sand.\u003c\/p\u003e\n\n\u003ch2\u003eHow the OPUS G2 250 Sump Works\u003c\/h2\u003e\n\u003cp\u003eWater leaves the display through the hidden overflow into the sump's sedimentation chamber, then passes through the nylon filter sock. The third chamber is the main filter chamber: it holds a constant water level of about 8 in (21 cm) and has room for a protein skimmer and a reactor. A bubble trap follows, and the final return chamber is where the return pump sits and where evaporation shows up, so that is where an auto top-off replaces water from the refill tank.\u003c\/p\u003e\n\u003cp\u003eThe separate refill tank is 20 in (50 cm) tall, and Nyos sizes it to hold about a week of RO water.\u003c\/p\u003e\n\n\u003ch2\u003eRecommended Equipment for the OPUS G2 250 (Sold Separately)\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtein skimmer:\u003c\/strong\u003e the \u003ca href=\"\/products\/quantum-120-protein-skimmer-nyos\"\u003eNyos Quantum 120\u003c\/a\u003e, whose 5.9 x 8.3 in footprint fits the 250's skimmer chamber. Compare all \u003ca href=\"\/collections\/nyos-protein-skimmers\"\u003eNyos Quantum protein skimmers\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReturn pump:\u003c\/strong\u003e about 525 GPH (2,000 L\/h), Nyos's recommendation for every OPUS G2 size. Shop \u003ca href=\"\/collections\/return-pumps\"\u003ereturn pumps\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCirculation:\u003c\/strong\u003e roughly 1,100 to 2,150 GPH of total flow from \u003ca href=\"\/collections\/powerheads\"\u003epowerheads\u003c\/a\u003e, which is 20 to 40 times the display volume per hour for a mixed reef.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating:\u003c\/strong\u003e as a rule of thumb, 200 to 325 W total, split across two \u003ca href=\"\/collections\/heaters-chillers-and-thermometers\"\u003eaquarium heaters\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto top-off:\u003c\/strong\u003e the refill tank is included but the controller is not. Add an \u003ca href=\"\/collections\/auto-top-off\"\u003eauto top-off system\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLighting:\u003c\/strong\u003e choose a reef light sized for a 27.6 in long, 21.7 in deep tank from our \u003ca href=\"\/collections\/aquarium-lighting\"\u003eaquarium lighting\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eNyos OPUS G2 250 Pro-Line FAQ\u003c\/h2\u003e\n\u003ch3\u003eWhat are the dimensions of the Nyos OPUS G2 250 Pro-Line?\u003c\/h3\u003e\n\u003cp\u003eThe display tank is 27.6 x 21.7 x 20.9 in (L x W x H). The Pro-Line cabinet is 30.9 x 25.8 x 35.4 in, and the complete system stands 4 ft 7 in (141 cm) tall. The sump inside the cabinet measures 15.8 x 20 x 13.8 in.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between the OPUS G2 250 Pro-Line and Slim-Line?\u003c\/h3\u003e\n\u003cp\u003eThe tank, sump, plumbing and refill tank are identical; only the cabinet changes. The Pro-Line cabinet (30.9 x 25.8 x 35.4 in) is larger than the tank for extra storage and adds BLUM 125° soft-close hinges, 38 mm solid doors, height-adjustable feet and a frame that hides the sand line. The Slim-Line cabinet (27.6 x 21.7 x 35.4 in) matches the tank footprint, uses standard hinges and costs less. See the \u003ca href=\"\/products\/opus-g2-250-slim-line-with-grey-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 250 Slim-Line in basalt grey\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eHow much water does the OPUS G2 250 hold?\u003c\/h3\u003e\n\u003cp\u003eThe display holds 204 L (53.9 gal) gross and the sump holds 42 L (11.1 gal) at its 8 in operating level, for about 65 gallons of gross system volume before rock and sand displace some of it.\u003c\/p\u003e\n\u003ch3\u003eDoes the OPUS G2 250 come with an auto top-off?\u003c\/h3\u003e\n\u003cp\u003eNo. It includes a separate 5.3-gallon refill tank that holds about a week of RO water, but the auto top-off controller and sensor are sold separately. Evaporation shows up in the sump's return chamber, so that is where the ATO sensor goes.\u003c\/p\u003e\n\u003ch3\u003eWhich protein skimmer fits the OPUS G2 250?\u003c\/h3\u003e\n\u003cp\u003eWe recommend the \u003ca href=\"\/products\/quantum-120-protein-skimmer-nyos\"\u003eNyos Quantum 120\u003c\/a\u003e. Its 5.9 x 8.3 in footprint fits the 250's 9.5 x 20 in skimmer chamber, which holds a constant water level of about 8 in.\u003c\/p\u003e\n\u003cp\u003eCompare all four sizes and both cabinet lines in our \u003ca href=\"\/collections\/nyos-aquariums\"\u003eNyos OPUS G2 aquarium collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Nyos","offers":[{"title":"Default Title","offer_id":52469963292970,"sku":"OPG2-6434","price":2299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-drop-ship-opus-g2-250-pro-line-grey-nyos-1256986773.jpg?v=1788464171"},{"product_id":"opus-g2-250-pro-line-with-white-cabinet-aquarium-plumbing-sump-stand-kit","title":"OPUS G2 250 Pro-Line Aquarium (54 Gal) - White - Nyos","description":"\u003cp\u003eThe \u003cstrong\u003eNyos OPUS G2 250 Pro-Line\u003c\/strong\u003e in white is a complete reef aquarium system: a rimless, ultra-clear 54-gallon display with a hidden overflow, the premium Pro-Line cabinet, ready-to-install PVC plumbing, a five-chamber sump and a separate refill tank.\u003c\/p\u003e\n\u003cp\u003eThe OPUS G2 250 stretches the footprint to 27.6 in (70 cm) long at the same 21.7 in depth, for 204 L (53.9 gal) gross in the display. The extra length gives fish more room to swim side to side than the 200 and leaves space for two rock structures with open sand between them, in a footprint still under 28 inches wide.\u003c\/p\u003e\n\n\u003ch2\u003eNyos OPUS G2 250 Pro-Line Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHidden overflow:\u003c\/strong\u003e the overflow box sits outside the tank, recessed into the back pane, so no overflow box takes up aquascaping space inside the display and the back pane is easy to keep clean.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-clear glass on three sides:\u003c\/strong\u003e the front and both side panes are ultra-clear glass with a much weaker green tint than standard glass, so fish and coral colors look true.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear edges and a deep blue back pane:\u003c\/strong\u003e only transparent silicone is used in the display, and the tinted back pane creates a sense of depth once the lights are on.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRimless pool tank:\u003c\/strong\u003e 10 mm (0.4 in) glass with no top frame or cross bracing inside the display.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtra depth for aquascaping:\u003c\/strong\u003e 21.7 in (55 cm) front to back.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuiet, adjustable drain:\u003c\/strong\u003e the main drain has an adjustable valve to tune out drain noise, backed by a separate emergency drain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge skimmer chamber:\u003c\/strong\u003e 9.5 x 20 in, with a constant water level of about 8 in and room for a skimmer plus a media or algae reactor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in the EU\u003c\/strong\u003e with FSC-certified cabinet production.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eThe Pro-Line Cabinet in White\u003c\/h2\u003e\n\u003cp\u003eThe Pro-Line cabinet measures 30.9 x 25.8 x 35.4 in, a larger footprint than the tank that leaves extra room for equipment and accessories. Its cubic design conceals the aquarium's bottom silicone seam and sand edge. Both doors are 38 mm solid boards on BLUM 125° soft-close hinges and open with a recessed push-to-open system, and height-adjustable feet let you level the system precisely. With the tank in place, the OPUS G2 250 Pro-Line stands 4 ft 7 in (141 cm) tall.\u003c\/p\u003e\n\u003cp\u003eThis listing is the white cabinet, with a matt finish. Both colors use moisture-resistant boards to EN 312 with a melamine resin coating that resists scratches and impacts, and waterproof pads inside the cabinet. The wood comes from verified legal sources under ISO 38200 and is produced in FSC-certified factories with 30% recycled material. Prefer basalt grey? See the \u003ca href=\"\/products\/opus-g2-250-pro-line-with-grey-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 250 Pro-Line in basalt grey\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eOPUS G2 250 Pro-Line Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay tank (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e27.6 x 21.7 x 20.9 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay volume (gross)\u003c\/th\u003e\n\u003ctd\u003e204 L (53.9 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eGlass\u003c\/th\u003e\n\u003ctd\u003e10 mm (0.4 in); ultra-clear front and side panes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePro-Line cabinet (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e30.9 x 25.8 x 35.4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTotal height, tank and cabinet\u003c\/th\u003e\n\u003ctd\u003e4 ft 7 in (141 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e15.8 x 20 x 13.8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump volume at 8 in water level\u003c\/th\u003e\n\u003ctd\u003e42 L (11.1 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSkimmer chamber footprint\u003c\/th\u003e\n\u003ctd\u003e9.5 x 20 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRefill tank\u003c\/th\u003e\n\u003ctd\u003e4.3 x 16.5 x 20 in, 20 L (5.3 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRecommended return pump\u003c\/th\u003e\n\u003ctd\u003e525 GPH (2,000 L\/h)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHinges\u003c\/th\u003e\n\u003ctd\u003eBLUM 125° soft-close\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHeight-adjustable feet\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCabinet finish\u003c\/th\u003e\n\u003ctd\u003eWhite, matt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOPUS G2 250 display tank with external overflow box and ultra-clear glass on three sides\u003c\/li\u003e\n\u003cli\u003ePro-Line cabinet in white\u003c\/li\u003e\n\u003cli\u003eReady-to-install PVC plumbing with an adjustable main drain valve and an emergency drain\u003c\/li\u003e\n\u003cli\u003eFive-chamber sump with a nylon filter sock\u003c\/li\u003e\n\u003cli\u003eSeparate 5.3-gallon refill tank\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot included: return pump, protein skimmer, lighting, heaters, circulation pumps, auto top-off, rock and sand.\u003c\/p\u003e\n\n\u003ch2\u003eHow the OPUS G2 250 Sump Works\u003c\/h2\u003e\n\u003cp\u003eWater leaves the display through the hidden overflow into the sump's sedimentation chamber, then passes through the nylon filter sock. The third chamber is the main filter chamber: it holds a constant water level of about 8 in (21 cm) and has room for a protein skimmer and a reactor. A bubble trap follows, and the final return chamber is where the return pump sits and where evaporation shows up, so that is where an auto top-off replaces water from the refill tank.\u003c\/p\u003e\n\u003cp\u003eThe separate refill tank is 20 in (50 cm) tall, and Nyos sizes it to hold about a week of RO water.\u003c\/p\u003e\n\n\u003ch2\u003eRecommended Equipment for the OPUS G2 250 (Sold Separately)\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtein skimmer:\u003c\/strong\u003e the \u003ca href=\"\/products\/quantum-120-protein-skimmer-nyos\"\u003eNyos Quantum 120\u003c\/a\u003e, whose 5.9 x 8.3 in footprint fits the 250's skimmer chamber. Compare all \u003ca href=\"\/collections\/nyos-protein-skimmers\"\u003eNyos Quantum protein skimmers\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReturn pump:\u003c\/strong\u003e about 525 GPH (2,000 L\/h), Nyos's recommendation for every OPUS G2 size. Shop \u003ca href=\"\/collections\/return-pumps\"\u003ereturn pumps\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCirculation:\u003c\/strong\u003e roughly 1,100 to 2,150 GPH of total flow from \u003ca href=\"\/collections\/powerheads\"\u003epowerheads\u003c\/a\u003e, which is 20 to 40 times the display volume per hour for a mixed reef.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating:\u003c\/strong\u003e as a rule of thumb, 200 to 325 W total, split across two \u003ca href=\"\/collections\/heaters-chillers-and-thermometers\"\u003eaquarium heaters\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto top-off:\u003c\/strong\u003e the refill tank is included but the controller is not. Add an \u003ca href=\"\/collections\/auto-top-off\"\u003eauto top-off system\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLighting:\u003c\/strong\u003e choose a reef light sized for a 27.6 in long, 21.7 in deep tank from our \u003ca href=\"\/collections\/aquarium-lighting\"\u003eaquarium lighting\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eNyos OPUS G2 250 Pro-Line FAQ\u003c\/h2\u003e\n\u003ch3\u003eWhat are the dimensions of the Nyos OPUS G2 250 Pro-Line?\u003c\/h3\u003e\n\u003cp\u003eThe display tank is 27.6 x 21.7 x 20.9 in (L x W x H). The Pro-Line cabinet is 30.9 x 25.8 x 35.4 in, and the complete system stands 4 ft 7 in (141 cm) tall. The sump inside the cabinet measures 15.8 x 20 x 13.8 in.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between the OPUS G2 250 Pro-Line and Slim-Line?\u003c\/h3\u003e\n\u003cp\u003eThe tank, sump, plumbing and refill tank are identical; only the cabinet changes. The Pro-Line cabinet (30.9 x 25.8 x 35.4 in) is larger than the tank for extra storage and adds BLUM 125° soft-close hinges, 38 mm solid doors, height-adjustable feet and a frame that hides the sand line. The Slim-Line cabinet (27.6 x 21.7 x 35.4 in) matches the tank footprint, uses standard hinges and costs less. See the \u003ca href=\"\/products\/opus-g2-250-slim-line-with-white-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 250 Slim-Line in white\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eHow much water does the OPUS G2 250 hold?\u003c\/h3\u003e\n\u003cp\u003eThe display holds 204 L (53.9 gal) gross and the sump holds 42 L (11.1 gal) at its 8 in operating level, for about 65 gallons of gross system volume before rock and sand displace some of it.\u003c\/p\u003e\n\u003ch3\u003eDoes the OPUS G2 250 come with an auto top-off?\u003c\/h3\u003e\n\u003cp\u003eNo. It includes a separate 5.3-gallon refill tank that holds about a week of RO water, but the auto top-off controller and sensor are sold separately. Evaporation shows up in the sump's return chamber, so that is where the ATO sensor goes.\u003c\/p\u003e\n\u003ch3\u003eWhich protein skimmer fits the OPUS G2 250?\u003c\/h3\u003e\n\u003cp\u003eWe recommend the \u003ca href=\"\/products\/quantum-120-protein-skimmer-nyos\"\u003eNyos Quantum 120\u003c\/a\u003e. Its 5.9 x 8.3 in footprint fits the 250's 9.5 x 20 in skimmer chamber, which holds a constant water level of about 8 in.\u003c\/p\u003e\n\u003cp\u003eCompare all four sizes and both cabinet lines in our \u003ca href=\"\/collections\/nyos-aquariums\"\u003eNyos OPUS G2 aquarium collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Nyos","offers":[{"title":"Default Title","offer_id":52469964046634,"sku":"OPG2-6427","price":2299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-drop-ship-opus-g2-250-pro-line-white-nyos-1256986744.jpg?v=1788464052"},{"product_id":"opus-g2-250-slim-line-with-grey-cabinet-aquarium-plumbing-sump-stand-kit","title":"OPUS G2 250 Slim-Line Aquarium (54 Gal) - Grey - Nyos","description":"\u003cp\u003eThe \u003cstrong\u003eNyos OPUS G2 250 Slim-Line\u003c\/strong\u003e in basalt grey is a complete reef aquarium system in the smallest possible footprint: a rimless, ultra-clear 54-gallon display with a hidden overflow on a cabinet that matches the tank exactly, plus ready-to-install PVC plumbing, a five-chamber sump and a separate refill tank.\u003c\/p\u003e\n\u003cp\u003eThe OPUS G2 250 stretches the footprint to 27.6 in (70 cm) long at the same 21.7 in depth, for 204 L (53.9 gal) gross in the display. The extra length gives fish more room to swim side to side than the 200 and leaves space for two rock structures with open sand between them, in a footprint still under 28 inches wide.\u003c\/p\u003e\n\n\u003ch2\u003eNyos OPUS G2 250 Slim-Line Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHidden overflow:\u003c\/strong\u003e the overflow box sits outside the tank, recessed into the back pane, so no overflow box takes up aquascaping space inside the display and the back pane is easy to keep clean.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-clear glass on three sides:\u003c\/strong\u003e the front and both side panes are ultra-clear glass with a much weaker green tint than standard glass, so fish and coral colors look true.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear edges and a deep blue back pane:\u003c\/strong\u003e only transparent silicone is used in the display, and the tinted back pane creates a sense of depth once the lights are on.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRimless pool tank:\u003c\/strong\u003e 10 mm (0.4 in) glass with no top frame or cross bracing inside the display.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtra depth for aquascaping:\u003c\/strong\u003e 21.7 in (55 cm) front to back.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuiet, adjustable drain:\u003c\/strong\u003e the main drain has an adjustable valve to tune out drain noise, backed by a separate emergency drain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge skimmer chamber:\u003c\/strong\u003e 9.5 x 20 in, with a constant water level of about 8 in and room for a skimmer plus a media or algae reactor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in the EU\u003c\/strong\u003e with FSC-certified cabinet production.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eThe Slim-Line Cabinet in Basalt Grey\u003c\/h2\u003e\n\u003cp\u003eThe Slim-Line cabinet measures 27.6 x 21.7 x 35.4 in, exactly the footprint of the tank, so the whole system takes up no more floor space than the glass. It has two doors on standard hinges with a recessed push-to-open system, and brings the OPUS G2 design in at a lower price than the Pro-Line. The feet are not height-adjustable, so set it on a level floor. With the tank in place, the OPUS G2 250 Slim-Line stands 4 ft 8 in (143 cm) tall.\u003c\/p\u003e\n\u003cp\u003eThis listing is the basalt grey cabinet, with a matt finish. Both colors use moisture-resistant boards to EN 312 with a melamine resin coating that resists scratches and impacts, and waterproof pads inside the cabinet. The wood comes from verified legal sources under ISO 38200 and is produced in FSC-certified factories with 30% recycled material. Prefer white? See the \u003ca href=\"\/products\/opus-g2-250-slim-line-with-white-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 250 Slim-Line in white\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eOPUS G2 250 Slim-Line Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay tank (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e27.6 x 21.7 x 20.9 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay volume (gross)\u003c\/th\u003e\n\u003ctd\u003e204 L (53.9 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eGlass\u003c\/th\u003e\n\u003ctd\u003e10 mm (0.4 in); ultra-clear front and side panes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSlim-Line cabinet (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e27.6 x 21.7 x 35.4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTotal height, tank and cabinet\u003c\/th\u003e\n\u003ctd\u003e4 ft 8 in (143 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e15.8 x 20 x 13.8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump volume at 8 in water level\u003c\/th\u003e\n\u003ctd\u003e42 L (11.1 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSkimmer chamber footprint\u003c\/th\u003e\n\u003ctd\u003e9.5 x 20 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRefill tank\u003c\/th\u003e\n\u003ctd\u003e4.3 x 16.5 x 20 in, 20 L (5.3 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRecommended return pump\u003c\/th\u003e\n\u003ctd\u003e525 GPH (2,000 L\/h)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHinges\u003c\/th\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHeight-adjustable feet\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCabinet finish\u003c\/th\u003e\n\u003ctd\u003eBasalt grey, matt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOPUS G2 250 display tank with external overflow box and ultra-clear glass on three sides\u003c\/li\u003e\n\u003cli\u003eSlim-Line cabinet in basalt grey\u003c\/li\u003e\n\u003cli\u003eReady-to-install PVC plumbing with an adjustable main drain valve and an emergency drain\u003c\/li\u003e\n\u003cli\u003eFive-chamber sump with a nylon filter sock\u003c\/li\u003e\n\u003cli\u003eSeparate 5.3-gallon refill tank\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot included: return pump, protein skimmer, lighting, heaters, circulation pumps, auto top-off, rock and sand.\u003c\/p\u003e\n\n\u003ch2\u003eHow the OPUS G2 250 Sump Works\u003c\/h2\u003e\n\u003cp\u003eWater leaves the display through the hidden overflow into the sump's sedimentation chamber, then passes through the nylon filter sock. The third chamber is the main filter chamber: it holds a constant water level of about 8 in (21 cm) and has room for a protein skimmer and a reactor. A bubble trap follows, and the final return chamber is where the return pump sits and where evaporation shows up, so that is where an auto top-off replaces water from the refill tank.\u003c\/p\u003e\n\u003cp\u003eThe separate refill tank is 20 in (50 cm) tall, and Nyos sizes it to hold about a week of RO water.\u003c\/p\u003e\n\n\u003ch2\u003eRecommended Equipment for the OPUS G2 250 (Sold Separately)\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtein skimmer:\u003c\/strong\u003e the \u003ca href=\"\/products\/quantum-120-protein-skimmer-nyos\"\u003eNyos Quantum 120\u003c\/a\u003e, whose 5.9 x 8.3 in footprint fits the 250's skimmer chamber. Compare all \u003ca href=\"\/collections\/nyos-protein-skimmers\"\u003eNyos Quantum protein skimmers\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReturn pump:\u003c\/strong\u003e about 525 GPH (2,000 L\/h), Nyos's recommendation for every OPUS G2 size. Shop \u003ca href=\"\/collections\/return-pumps\"\u003ereturn pumps\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCirculation:\u003c\/strong\u003e roughly 1,100 to 2,150 GPH of total flow from \u003ca href=\"\/collections\/powerheads\"\u003epowerheads\u003c\/a\u003e, which is 20 to 40 times the display volume per hour for a mixed reef.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating:\u003c\/strong\u003e as a rule of thumb, 200 to 325 W total, split across two \u003ca href=\"\/collections\/heaters-chillers-and-thermometers\"\u003eaquarium heaters\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto top-off:\u003c\/strong\u003e the refill tank is included but the controller is not. Add an \u003ca href=\"\/collections\/auto-top-off\"\u003eauto top-off system\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLighting:\u003c\/strong\u003e choose a reef light sized for a 27.6 in long, 21.7 in deep tank from our \u003ca href=\"\/collections\/aquarium-lighting\"\u003eaquarium lighting\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eNyos OPUS G2 250 Slim-Line FAQ\u003c\/h2\u003e\n\u003ch3\u003eWhat are the dimensions of the Nyos OPUS G2 250 Slim-Line?\u003c\/h3\u003e\n\u003cp\u003eThe display tank is 27.6 x 21.7 x 20.9 in (L x W x H). The Slim-Line cabinet is 27.6 x 21.7 x 35.4 in, and the complete system stands 4 ft 8 in (143 cm) tall. The sump inside the cabinet measures 15.8 x 20 x 13.8 in.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between the OPUS G2 250 Pro-Line and Slim-Line?\u003c\/h3\u003e\n\u003cp\u003eThe tank, sump, plumbing and refill tank are identical; only the cabinet changes. The Pro-Line cabinet (30.9 x 25.8 x 35.4 in) is larger than the tank for extra storage and adds BLUM 125° soft-close hinges, 38 mm solid doors, height-adjustable feet and a frame that hides the sand line. The Slim-Line cabinet (27.6 x 21.7 x 35.4 in) matches the tank footprint, uses standard hinges and costs less. See the \u003ca href=\"\/products\/opus-g2-250-pro-line-with-grey-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 250 Pro-Line in basalt grey\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eHow much water does the OPUS G2 250 hold?\u003c\/h3\u003e\n\u003cp\u003eThe display holds 204 L (53.9 gal) gross and the sump holds 42 L (11.1 gal) at its 8 in operating level, for about 65 gallons of gross system volume before rock and sand displace some of it.\u003c\/p\u003e\n\u003ch3\u003eDoes the OPUS G2 250 come with an auto top-off?\u003c\/h3\u003e\n\u003cp\u003eNo. It includes a separate 5.3-gallon refill tank that holds about a week of RO water, but the auto top-off controller and sensor are sold separately. Evaporation shows up in the sump's return chamber, so that is where the ATO sensor goes.\u003c\/p\u003e\n\u003ch3\u003eWhich protein skimmer fits the OPUS G2 250?\u003c\/h3\u003e\n\u003cp\u003eWe recommend the \u003ca href=\"\/products\/quantum-120-protein-skimmer-nyos\"\u003eNyos Quantum 120\u003c\/a\u003e. Its 5.9 x 8.3 in footprint fits the 250's 9.5 x 20 in skimmer chamber, which holds a constant water level of about 8 in.\u003c\/p\u003e\n\u003cp\u003eCompare all four sizes and both cabinet lines in our \u003ca href=\"\/collections\/nyos-aquariums\"\u003eNyos OPUS G2 aquarium collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Nyos","offers":[{"title":"Default Title","offer_id":52469964898602,"sku":"OPG2-6410","price":1899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-drop-ship-opus-g2-250-slim-line-grey-nyos-1256986741.jpg?v=1788463932"},{"product_id":"opus-g2-250-slim-line-with-white-cabinet-aquarium-plumbing-sump-stand-kit","title":"OPUS G2 250 Slim-Line Aquarium (54 Gal) - White - Nyos","description":"\u003cp\u003eThe \u003cstrong\u003eNyos OPUS G2 250 Slim-Line\u003c\/strong\u003e in white is a complete reef aquarium system in the smallest possible footprint: a rimless, ultra-clear 54-gallon display with a hidden overflow on a cabinet that matches the tank exactly, plus ready-to-install PVC plumbing, a five-chamber sump and a separate refill tank.\u003c\/p\u003e\n\u003cp\u003eThe OPUS G2 250 stretches the footprint to 27.6 in (70 cm) long at the same 21.7 in depth, for 204 L (53.9 gal) gross in the display. The extra length gives fish more room to swim side to side than the 200 and leaves space for two rock structures with open sand between them, in a footprint still under 28 inches wide.\u003c\/p\u003e\n\n\u003ch2\u003eNyos OPUS G2 250 Slim-Line Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHidden overflow:\u003c\/strong\u003e the overflow box sits outside the tank, recessed into the back pane, so no overflow box takes up aquascaping space inside the display and the back pane is easy to keep clean.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-clear glass on three sides:\u003c\/strong\u003e the front and both side panes are ultra-clear glass with a much weaker green tint than standard glass, so fish and coral colors look true.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear edges and a deep blue back pane:\u003c\/strong\u003e only transparent silicone is used in the display, and the tinted back pane creates a sense of depth once the lights are on.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRimless pool tank:\u003c\/strong\u003e 10 mm (0.4 in) glass with no top frame or cross bracing inside the display.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtra depth for aquascaping:\u003c\/strong\u003e 21.7 in (55 cm) front to back.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuiet, adjustable drain:\u003c\/strong\u003e the main drain has an adjustable valve to tune out drain noise, backed by a separate emergency drain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge skimmer chamber:\u003c\/strong\u003e 9.5 x 20 in, with a constant water level of about 8 in and room for a skimmer plus a media or algae reactor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in the EU\u003c\/strong\u003e with FSC-certified cabinet production.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eThe Slim-Line Cabinet in White\u003c\/h2\u003e\n\u003cp\u003eThe Slim-Line cabinet measures 27.6 x 21.7 x 35.4 in, exactly the footprint of the tank, so the whole system takes up no more floor space than the glass. It has two doors on standard hinges with a recessed push-to-open system, and brings the OPUS G2 design in at a lower price than the Pro-Line. The feet are not height-adjustable, so set it on a level floor. With the tank in place, the OPUS G2 250 Slim-Line stands 4 ft 8 in (143 cm) tall.\u003c\/p\u003e\n\u003cp\u003eThis listing is the white cabinet, with a matt finish. Both colors use moisture-resistant boards to EN 312 with a melamine resin coating that resists scratches and impacts, and waterproof pads inside the cabinet. The wood comes from verified legal sources under ISO 38200 and is produced in FSC-certified factories with 30% recycled material. Prefer basalt grey? See the \u003ca href=\"\/products\/opus-g2-250-slim-line-with-grey-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 250 Slim-Line in basalt grey\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eOPUS G2 250 Slim-Line Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay tank (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e27.6 x 21.7 x 20.9 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay volume (gross)\u003c\/th\u003e\n\u003ctd\u003e204 L (53.9 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eGlass\u003c\/th\u003e\n\u003ctd\u003e10 mm (0.4 in); ultra-clear front and side panes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSlim-Line cabinet (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e27.6 x 21.7 x 35.4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTotal height, tank and cabinet\u003c\/th\u003e\n\u003ctd\u003e4 ft 8 in (143 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e15.8 x 20 x 13.8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump volume at 8 in water level\u003c\/th\u003e\n\u003ctd\u003e42 L (11.1 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSkimmer chamber footprint\u003c\/th\u003e\n\u003ctd\u003e9.5 x 20 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRefill tank\u003c\/th\u003e\n\u003ctd\u003e4.3 x 16.5 x 20 in, 20 L (5.3 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRecommended return pump\u003c\/th\u003e\n\u003ctd\u003e525 GPH (2,000 L\/h)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHinges\u003c\/th\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHeight-adjustable feet\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCabinet finish\u003c\/th\u003e\n\u003ctd\u003eWhite, matt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOPUS G2 250 display tank with external overflow box and ultra-clear glass on three sides\u003c\/li\u003e\n\u003cli\u003eSlim-Line cabinet in white\u003c\/li\u003e\n\u003cli\u003eReady-to-install PVC plumbing with an adjustable main drain valve and an emergency drain\u003c\/li\u003e\n\u003cli\u003eFive-chamber sump with a nylon filter sock\u003c\/li\u003e\n\u003cli\u003eSeparate 5.3-gallon refill tank\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot included: return pump, protein skimmer, lighting, heaters, circulation pumps, auto top-off, rock and sand.\u003c\/p\u003e\n\n\u003ch2\u003eHow the OPUS G2 250 Sump Works\u003c\/h2\u003e\n\u003cp\u003eWater leaves the display through the hidden overflow into the sump's sedimentation chamber, then passes through the nylon filter sock. The third chamber is the main filter chamber: it holds a constant water level of about 8 in (21 cm) and has room for a protein skimmer and a reactor. A bubble trap follows, and the final return chamber is where the return pump sits and where evaporation shows up, so that is where an auto top-off replaces water from the refill tank.\u003c\/p\u003e\n\u003cp\u003eThe separate refill tank is 20 in (50 cm) tall, and Nyos sizes it to hold about a week of RO water.\u003c\/p\u003e\n\n\u003ch2\u003eRecommended Equipment for the OPUS G2 250 (Sold Separately)\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtein skimmer:\u003c\/strong\u003e the \u003ca href=\"\/products\/quantum-120-protein-skimmer-nyos\"\u003eNyos Quantum 120\u003c\/a\u003e, whose 5.9 x 8.3 in footprint fits the 250's skimmer chamber. Compare all \u003ca href=\"\/collections\/nyos-protein-skimmers\"\u003eNyos Quantum protein skimmers\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReturn pump:\u003c\/strong\u003e about 525 GPH (2,000 L\/h), Nyos's recommendation for every OPUS G2 size. Shop \u003ca href=\"\/collections\/return-pumps\"\u003ereturn pumps\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCirculation:\u003c\/strong\u003e roughly 1,100 to 2,150 GPH of total flow from \u003ca href=\"\/collections\/powerheads\"\u003epowerheads\u003c\/a\u003e, which is 20 to 40 times the display volume per hour for a mixed reef.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating:\u003c\/strong\u003e as a rule of thumb, 200 to 325 W total, split across two \u003ca href=\"\/collections\/heaters-chillers-and-thermometers\"\u003eaquarium heaters\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto top-off:\u003c\/strong\u003e the refill tank is included but the controller is not. Add an \u003ca href=\"\/collections\/auto-top-off\"\u003eauto top-off system\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLighting:\u003c\/strong\u003e choose a reef light sized for a 27.6 in long, 21.7 in deep tank from our \u003ca href=\"\/collections\/aquarium-lighting\"\u003eaquarium lighting\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eNyos OPUS G2 250 Slim-Line FAQ\u003c\/h2\u003e\n\u003ch3\u003eWhat are the dimensions of the Nyos OPUS G2 250 Slim-Line?\u003c\/h3\u003e\n\u003cp\u003eThe display tank is 27.6 x 21.7 x 20.9 in (L x W x H). The Slim-Line cabinet is 27.6 x 21.7 x 35.4 in, and the complete system stands 4 ft 8 in (143 cm) tall. The sump inside the cabinet measures 15.8 x 20 x 13.8 in.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between the OPUS G2 250 Pro-Line and Slim-Line?\u003c\/h3\u003e\n\u003cp\u003eThe tank, sump, plumbing and refill tank are identical; only the cabinet changes. The Pro-Line cabinet (30.9 x 25.8 x 35.4 in) is larger than the tank for extra storage and adds BLUM 125° soft-close hinges, 38 mm solid doors, height-adjustable feet and a frame that hides the sand line. The Slim-Line cabinet (27.6 x 21.7 x 35.4 in) matches the tank footprint, uses standard hinges and costs less. See the \u003ca href=\"\/products\/opus-g2-250-pro-line-with-white-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 250 Pro-Line in white\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eHow much water does the OPUS G2 250 hold?\u003c\/h3\u003e\n\u003cp\u003eThe display holds 204 L (53.9 gal) gross and the sump holds 42 L (11.1 gal) at its 8 in operating level, for about 65 gallons of gross system volume before rock and sand displace some of it.\u003c\/p\u003e\n\u003ch3\u003eDoes the OPUS G2 250 come with an auto top-off?\u003c\/h3\u003e\n\u003cp\u003eNo. It includes a separate 5.3-gallon refill tank that holds about a week of RO water, but the auto top-off controller and sensor are sold separately. Evaporation shows up in the sump's return chamber, so that is where the ATO sensor goes.\u003c\/p\u003e\n\u003ch3\u003eWhich protein skimmer fits the OPUS G2 250?\u003c\/h3\u003e\n\u003cp\u003eWe recommend the \u003ca href=\"\/products\/quantum-120-protein-skimmer-nyos\"\u003eNyos Quantum 120\u003c\/a\u003e. Its 5.9 x 8.3 in footprint fits the 250's 9.5 x 20 in skimmer chamber, which holds a constant water level of about 8 in.\u003c\/p\u003e\n\u003cp\u003eCompare all four sizes and both cabinet lines in our \u003ca href=\"\/collections\/nyos-aquariums\"\u003eNyos OPUS G2 aquarium collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Nyos","offers":[{"title":"Default Title","offer_id":52469965291818,"sku":"OPG2-6403","price":1899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-drop-ship-opus-g2-250-slim-line-white-nyos-1256986748.jpg?v=1788463812"},{"product_id":"opus-g2-300-pro-line-with-grey-cabinet-aquarium-plumbing-sump-stand-kit","title":"OPUS G2 300 Pro-Line Aquarium (69 Gal) - Grey - Nyos","description":"\u003cp\u003eThe \u003cstrong\u003eNyos OPUS G2 300 Pro-Line\u003c\/strong\u003e in basalt grey is a complete reef aquarium system: a rimless, ultra-clear 69-gallon display with a hidden overflow, the premium Pro-Line cabinet, ready-to-install PVC plumbing, a five-chamber sump and a separate refill tank.\u003c\/p\u003e\n\u003cp\u003eThe OPUS G2 300 is the 90 cm (35.4 in) model, a three-foot-class reef holding 262 L (69 gal) gross in the display. At 21.7 in deep it has more front-to-back room than a typical 18-inch-deep 3-foot tank, so there is space for a multi-island aquascape and coral growth without crowding the glass.\u003c\/p\u003e\n\n\u003ch2\u003eNyos OPUS G2 300 Pro-Line Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHidden overflow:\u003c\/strong\u003e the overflow box sits outside the tank, recessed into the back pane, so no overflow box takes up aquascaping space inside the display and the back pane is easy to keep clean.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-clear glass on three sides:\u003c\/strong\u003e the front and both side panes are ultra-clear glass with a much weaker green tint than standard glass, so fish and coral colors look true.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear edges and a deep blue back pane:\u003c\/strong\u003e only transparent silicone is used in the display, and the tinted back pane creates a sense of depth once the lights are on.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRimless pool tank:\u003c\/strong\u003e 10 mm (0.4 in) glass with no top frame or cross bracing inside the display.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtra depth for aquascaping:\u003c\/strong\u003e 21.7 in (55 cm) front to back.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuiet, adjustable drain:\u003c\/strong\u003e the main drain has an adjustable valve to tune out drain noise, backed by a separate emergency drain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge skimmer chamber:\u003c\/strong\u003e 11 x 20 in, with a constant water level of about 8 in and room for a skimmer plus a media or algae reactor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in the EU\u003c\/strong\u003e with FSC-certified cabinet production.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eThe Pro-Line Cabinet in Basalt Grey\u003c\/h2\u003e\n\u003cp\u003eThe Pro-Line cabinet measures 38.8 x 25.8 x 35.4 in, a larger footprint than the tank that leaves extra room for equipment and accessories. Its cubic design conceals the aquarium's bottom silicone seam and sand edge. Both doors are 38 mm solid boards on BLUM 125° soft-close hinges and open with a recessed push-to-open system, and height-adjustable feet let you level the system precisely. With the tank in place, the OPUS G2 300 Pro-Line stands 4 ft 7 in (141 cm) tall.\u003c\/p\u003e\n\u003cp\u003eThis listing is the basalt grey cabinet, with a matt finish. Both colors use moisture-resistant boards to EN 312 with a melamine resin coating that resists scratches and impacts, and waterproof pads inside the cabinet. The wood comes from verified legal sources under ISO 38200 and is produced in FSC-certified factories with 30% recycled material. Prefer white? See the \u003ca href=\"\/products\/opus-g2-300-pro-line-with-white-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 300 Pro-Line in white\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eOPUS G2 300 Pro-Line Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay tank (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e35.4 x 21.7 x 20.9 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay volume (gross)\u003c\/th\u003e\n\u003ctd\u003e262 L (69 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eGlass\u003c\/th\u003e\n\u003ctd\u003e10 mm (0.4 in); ultra-clear front and side panes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePro-Line cabinet (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e38.8 x 25.8 x 35.4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTotal height, tank and cabinet\u003c\/th\u003e\n\u003ctd\u003e4 ft 7 in (141 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e20 x 20 x 13.8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump volume at 8 in water level\u003c\/th\u003e\n\u003ctd\u003e52 L (14 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSkimmer chamber footprint\u003c\/th\u003e\n\u003ctd\u003e11 x 20 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRefill tank\u003c\/th\u003e\n\u003ctd\u003e4.7 x 16.5 x 20 in, 22 L (6 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRecommended return pump\u003c\/th\u003e\n\u003ctd\u003e525 GPH (2,000 L\/h)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHinges\u003c\/th\u003e\n\u003ctd\u003eBLUM 125° soft-close\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHeight-adjustable feet\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCabinet finish\u003c\/th\u003e\n\u003ctd\u003eBasalt grey, matt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOPUS G2 300 display tank with external overflow box and ultra-clear glass on three sides\u003c\/li\u003e\n\u003cli\u003ePro-Line cabinet in basalt grey\u003c\/li\u003e\n\u003cli\u003eReady-to-install PVC plumbing with an adjustable main drain valve and an emergency drain\u003c\/li\u003e\n\u003cli\u003eFive-chamber sump with a nylon filter sock\u003c\/li\u003e\n\u003cli\u003eSeparate 6-gallon refill tank\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot included: return pump, protein skimmer, lighting, heaters, circulation pumps, auto top-off, rock and sand.\u003c\/p\u003e\n\n\u003ch2\u003eHow the OPUS G2 300 Sump Works\u003c\/h2\u003e\n\u003cp\u003eWater leaves the display through the hidden overflow into the sump's sedimentation chamber, then passes through the nylon filter sock. The third chamber is the main filter chamber: it holds a constant water level of about 8 in (21 cm) and has room for a protein skimmer and a reactor. A bubble trap follows, and the final return chamber is where the return pump sits and where evaporation shows up, so that is where an auto top-off replaces water from the refill tank.\u003c\/p\u003e\n\u003cp\u003eThe separate refill tank is 20 in (50 cm) tall, and Nyos sizes it to hold about a week of RO water.\u003c\/p\u003e\n\n\u003ch2\u003eRecommended Equipment for the OPUS G2 300 (Sold Separately)\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtein skimmer:\u003c\/strong\u003e the \u003ca href=\"\/products\/quantum-160-protein-skimmer-nyos-1\"\u003eNyos Quantum 160\u003c\/a\u003e, whose 7.3 x 9.4 in footprint fits the 300's skimmer chamber. Compare all \u003ca href=\"\/collections\/nyos-protein-skimmers\"\u003eNyos Quantum protein skimmers\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReturn pump:\u003c\/strong\u003e about 525 GPH (2,000 L\/h), Nyos's recommendation for every OPUS G2 size. Shop \u003ca href=\"\/collections\/return-pumps\"\u003ereturn pumps\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCirculation:\u003c\/strong\u003e roughly 1,400 to 2,750 GPH of total flow from \u003ca href=\"\/collections\/powerheads\"\u003epowerheads\u003c\/a\u003e, which is 20 to 40 times the display volume per hour for a mixed reef.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating:\u003c\/strong\u003e as a rule of thumb, 250 to 425 W total, split across two \u003ca href=\"\/collections\/heaters-chillers-and-thermometers\"\u003eaquarium heaters\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto top-off:\u003c\/strong\u003e the refill tank is included but the controller is not. Add an \u003ca href=\"\/collections\/auto-top-off\"\u003eauto top-off system\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLighting:\u003c\/strong\u003e choose a reef light sized for a 35.4 in long, 21.7 in deep tank from our \u003ca href=\"\/collections\/aquarium-lighting\"\u003eaquarium lighting\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eNyos OPUS G2 300 Pro-Line FAQ\u003c\/h2\u003e\n\u003ch3\u003eWhat are the dimensions of the Nyos OPUS G2 300 Pro-Line?\u003c\/h3\u003e\n\u003cp\u003eThe display tank is 35.4 x 21.7 x 20.9 in (L x W x H). The Pro-Line cabinet is 38.8 x 25.8 x 35.4 in, and the complete system stands 4 ft 7 in (141 cm) tall. The sump inside the cabinet measures 20 x 20 x 13.8 in.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between the OPUS G2 300 Pro-Line and Slim-Line?\u003c\/h3\u003e\n\u003cp\u003eThe tank, sump, plumbing and refill tank are identical; only the cabinet changes. The Pro-Line cabinet (38.8 x 25.8 x 35.4 in) is larger than the tank for extra storage and adds BLUM 125° soft-close hinges, 38 mm solid doors, height-adjustable feet and a frame that hides the sand line. The Slim-Line cabinet (35.4 x 21.7 x 35.4 in) matches the tank footprint, uses standard hinges and costs less. See the \u003ca href=\"\/products\/opus-g2-300-slim-line-with-grey-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 300 Slim-Line in basalt grey\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eHow much water does the OPUS G2 300 hold?\u003c\/h3\u003e\n\u003cp\u003eThe display holds 262 L (69 gal) gross and the sump holds 52 L (14 gal) at its 8 in operating level, for about 83 gallons of gross system volume before rock and sand displace some of it.\u003c\/p\u003e\n\u003ch3\u003eDoes the OPUS G2 300 come with an auto top-off?\u003c\/h3\u003e\n\u003cp\u003eNo. It includes a separate 6-gallon refill tank that holds about a week of RO water, but the auto top-off controller and sensor are sold separately. Evaporation shows up in the sump's return chamber, so that is where the ATO sensor goes.\u003c\/p\u003e\n\u003ch3\u003eWhich protein skimmer fits the OPUS G2 300?\u003c\/h3\u003e\n\u003cp\u003eWe recommend the \u003ca href=\"\/products\/quantum-160-protein-skimmer-nyos-1\"\u003eNyos Quantum 160\u003c\/a\u003e. Its 7.3 x 9.4 in footprint fits the 300's 11 x 20 in skimmer chamber, which holds a constant water level of about 8 in.\u003c\/p\u003e\n\u003cp\u003eCompare all four sizes and both cabinet lines in our \u003ca href=\"\/collections\/nyos-aquariums\"\u003eNyos OPUS G2 aquarium collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Nyos","offers":[{"title":"Default Title","offer_id":52469967683882,"sku":"OPG2-1590","price":2399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-drop-ship-opus-g2-300-pro-line-grey-nyos-1256986751.jpg?v=1788463692"},{"product_id":"opus-g2-300-pro-line-with-white-cabinet-aquarium-plumbing-sump-stand-kit","title":"OPUS G2 300 Pro-Line Aquarium (69 Gal) - White - Nyos","description":"\u003cp\u003eThe \u003cstrong\u003eNyos OPUS G2 300 Pro-Line\u003c\/strong\u003e in white is a complete reef aquarium system: a rimless, ultra-clear 69-gallon display with a hidden overflow, the premium Pro-Line cabinet, ready-to-install PVC plumbing, a five-chamber sump and a separate refill tank.\u003c\/p\u003e\n\u003cp\u003eThe OPUS G2 300 is the 90 cm (35.4 in) model, a three-foot-class reef holding 262 L (69 gal) gross in the display. At 21.7 in deep it has more front-to-back room than a typical 18-inch-deep 3-foot tank, so there is space for a multi-island aquascape and coral growth without crowding the glass.\u003c\/p\u003e\n\n\u003ch2\u003eNyos OPUS G2 300 Pro-Line Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHidden overflow:\u003c\/strong\u003e the overflow box sits outside the tank, recessed into the back pane, so no overflow box takes up aquascaping space inside the display and the back pane is easy to keep clean.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-clear glass on three sides:\u003c\/strong\u003e the front and both side panes are ultra-clear glass with a much weaker green tint than standard glass, so fish and coral colors look true.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear edges and a deep blue back pane:\u003c\/strong\u003e only transparent silicone is used in the display, and the tinted back pane creates a sense of depth once the lights are on.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRimless pool tank:\u003c\/strong\u003e 10 mm (0.4 in) glass with no top frame or cross bracing inside the display.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtra depth for aquascaping:\u003c\/strong\u003e 21.7 in (55 cm) front to back.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuiet, adjustable drain:\u003c\/strong\u003e the main drain has an adjustable valve to tune out drain noise, backed by a separate emergency drain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge skimmer chamber:\u003c\/strong\u003e 11 x 20 in, with a constant water level of about 8 in and room for a skimmer plus a media or algae reactor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in the EU\u003c\/strong\u003e with FSC-certified cabinet production.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eThe Pro-Line Cabinet in White\u003c\/h2\u003e\n\u003cp\u003eThe Pro-Line cabinet measures 38.8 x 25.8 x 35.4 in, a larger footprint than the tank that leaves extra room for equipment and accessories. Its cubic design conceals the aquarium's bottom silicone seam and sand edge. Both doors are 38 mm solid boards on BLUM 125° soft-close hinges and open with a recessed push-to-open system, and height-adjustable feet let you level the system precisely. With the tank in place, the OPUS G2 300 Pro-Line stands 4 ft 7 in (141 cm) tall.\u003c\/p\u003e\n\u003cp\u003eThis listing is the white cabinet, with a matt finish. Both colors use moisture-resistant boards to EN 312 with a melamine resin coating that resists scratches and impacts, and waterproof pads inside the cabinet. The wood comes from verified legal sources under ISO 38200 and is produced in FSC-certified factories with 30% recycled material. Prefer basalt grey? See the \u003ca href=\"\/products\/opus-g2-300-pro-line-with-grey-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 300 Pro-Line in basalt grey\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eOPUS G2 300 Pro-Line Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay tank (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e35.4 x 21.7 x 20.9 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay volume (gross)\u003c\/th\u003e\n\u003ctd\u003e262 L (69 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eGlass\u003c\/th\u003e\n\u003ctd\u003e10 mm (0.4 in); ultra-clear front and side panes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePro-Line cabinet (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e38.8 x 25.8 x 35.4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTotal height, tank and cabinet\u003c\/th\u003e\n\u003ctd\u003e4 ft 7 in (141 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e20 x 20 x 13.8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump volume at 8 in water level\u003c\/th\u003e\n\u003ctd\u003e52 L (14 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSkimmer chamber footprint\u003c\/th\u003e\n\u003ctd\u003e11 x 20 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRefill tank\u003c\/th\u003e\n\u003ctd\u003e4.7 x 16.5 x 20 in, 22 L (6 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRecommended return pump\u003c\/th\u003e\n\u003ctd\u003e525 GPH (2,000 L\/h)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHinges\u003c\/th\u003e\n\u003ctd\u003eBLUM 125° soft-close\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHeight-adjustable feet\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCabinet finish\u003c\/th\u003e\n\u003ctd\u003eWhite, matt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOPUS G2 300 display tank with external overflow box and ultra-clear glass on three sides\u003c\/li\u003e\n\u003cli\u003ePro-Line cabinet in white\u003c\/li\u003e\n\u003cli\u003eReady-to-install PVC plumbing with an adjustable main drain valve and an emergency drain\u003c\/li\u003e\n\u003cli\u003eFive-chamber sump with a nylon filter sock\u003c\/li\u003e\n\u003cli\u003eSeparate 6-gallon refill tank\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot included: return pump, protein skimmer, lighting, heaters, circulation pumps, auto top-off, rock and sand.\u003c\/p\u003e\n\n\u003ch2\u003eHow the OPUS G2 300 Sump Works\u003c\/h2\u003e\n\u003cp\u003eWater leaves the display through the hidden overflow into the sump's sedimentation chamber, then passes through the nylon filter sock. The third chamber is the main filter chamber: it holds a constant water level of about 8 in (21 cm) and has room for a protein skimmer and a reactor. A bubble trap follows, and the final return chamber is where the return pump sits and where evaporation shows up, so that is where an auto top-off replaces water from the refill tank.\u003c\/p\u003e\n\u003cp\u003eThe separate refill tank is 20 in (50 cm) tall, and Nyos sizes it to hold about a week of RO water.\u003c\/p\u003e\n\n\u003ch2\u003eRecommended Equipment for the OPUS G2 300 (Sold Separately)\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtein skimmer:\u003c\/strong\u003e the \u003ca href=\"\/products\/quantum-160-protein-skimmer-nyos-1\"\u003eNyos Quantum 160\u003c\/a\u003e, whose 7.3 x 9.4 in footprint fits the 300's skimmer chamber. Compare all \u003ca href=\"\/collections\/nyos-protein-skimmers\"\u003eNyos Quantum protein skimmers\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReturn pump:\u003c\/strong\u003e about 525 GPH (2,000 L\/h), Nyos's recommendation for every OPUS G2 size. Shop \u003ca href=\"\/collections\/return-pumps\"\u003ereturn pumps\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCirculation:\u003c\/strong\u003e roughly 1,400 to 2,750 GPH of total flow from \u003ca href=\"\/collections\/powerheads\"\u003epowerheads\u003c\/a\u003e, which is 20 to 40 times the display volume per hour for a mixed reef.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating:\u003c\/strong\u003e as a rule of thumb, 250 to 425 W total, split across two \u003ca href=\"\/collections\/heaters-chillers-and-thermometers\"\u003eaquarium heaters\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto top-off:\u003c\/strong\u003e the refill tank is included but the controller is not. Add an \u003ca href=\"\/collections\/auto-top-off\"\u003eauto top-off system\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLighting:\u003c\/strong\u003e choose a reef light sized for a 35.4 in long, 21.7 in deep tank from our \u003ca href=\"\/collections\/aquarium-lighting\"\u003eaquarium lighting\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eNyos OPUS G2 300 Pro-Line FAQ\u003c\/h2\u003e\n\u003ch3\u003eWhat are the dimensions of the Nyos OPUS G2 300 Pro-Line?\u003c\/h3\u003e\n\u003cp\u003eThe display tank is 35.4 x 21.7 x 20.9 in (L x W x H). The Pro-Line cabinet is 38.8 x 25.8 x 35.4 in, and the complete system stands 4 ft 7 in (141 cm) tall. The sump inside the cabinet measures 20 x 20 x 13.8 in.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between the OPUS G2 300 Pro-Line and Slim-Line?\u003c\/h3\u003e\n\u003cp\u003eThe tank, sump, plumbing and refill tank are identical; only the cabinet changes. The Pro-Line cabinet (38.8 x 25.8 x 35.4 in) is larger than the tank for extra storage and adds BLUM 125° soft-close hinges, 38 mm solid doors, height-adjustable feet and a frame that hides the sand line. The Slim-Line cabinet (35.4 x 21.7 x 35.4 in) matches the tank footprint, uses standard hinges and costs less. See the \u003ca href=\"\/products\/opus-g2-300-slim-line-with-white-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 300 Slim-Line in white\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eHow much water does the OPUS G2 300 hold?\u003c\/h3\u003e\n\u003cp\u003eThe display holds 262 L (69 gal) gross and the sump holds 52 L (14 gal) at its 8 in operating level, for about 83 gallons of gross system volume before rock and sand displace some of it.\u003c\/p\u003e\n\u003ch3\u003eDoes the OPUS G2 300 come with an auto top-off?\u003c\/h3\u003e\n\u003cp\u003eNo. It includes a separate 6-gallon refill tank that holds about a week of RO water, but the auto top-off controller and sensor are sold separately. Evaporation shows up in the sump's return chamber, so that is where the ATO sensor goes.\u003c\/p\u003e\n\u003ch3\u003eWhich protein skimmer fits the OPUS G2 300?\u003c\/h3\u003e\n\u003cp\u003eWe recommend the \u003ca href=\"\/products\/quantum-160-protein-skimmer-nyos-1\"\u003eNyos Quantum 160\u003c\/a\u003e. Its 7.3 x 9.4 in footprint fits the 300's 11 x 20 in skimmer chamber, which holds a constant water level of about 8 in.\u003c\/p\u003e\n\u003cp\u003eCompare all four sizes and both cabinet lines in our \u003ca href=\"\/collections\/nyos-aquariums\"\u003eNyos OPUS G2 aquarium collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Nyos","offers":[{"title":"Default Title","offer_id":52469968077098,"sku":"OPG2-1583","price":2399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-drop-ship-opus-g2-300-pro-line-white-nyos-1256986749.jpg?v=1788463572"},{"product_id":"opus-g2-300-slim-line-with-grey-cabinet-aquarium-plumbing-sump-stand-kit","title":"OPUS G2 300 Slim-Line Aquarium (69 Gal) - Grey - Nyos","description":"\u003cp\u003eThe \u003cstrong\u003eNyos OPUS G2 300 Slim-Line\u003c\/strong\u003e in basalt grey is a complete reef aquarium system in the smallest possible footprint: a rimless, ultra-clear 69-gallon display with a hidden overflow on a cabinet that matches the tank exactly, plus ready-to-install PVC plumbing, a five-chamber sump and a separate refill tank.\u003c\/p\u003e\n\u003cp\u003eThe OPUS G2 300 is the 90 cm (35.4 in) model, a three-foot-class reef holding 262 L (69 gal) gross in the display. At 21.7 in deep it has more front-to-back room than a typical 18-inch-deep 3-foot tank, so there is space for a multi-island aquascape and coral growth without crowding the glass.\u003c\/p\u003e\n\n\u003ch2\u003eNyos OPUS G2 300 Slim-Line Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHidden overflow:\u003c\/strong\u003e the overflow box sits outside the tank, recessed into the back pane, so no overflow box takes up aquascaping space inside the display and the back pane is easy to keep clean.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-clear glass on three sides:\u003c\/strong\u003e the front and both side panes are ultra-clear glass with a much weaker green tint than standard glass, so fish and coral colors look true.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear edges and a deep blue back pane:\u003c\/strong\u003e only transparent silicone is used in the display, and the tinted back pane creates a sense of depth once the lights are on.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRimless pool tank:\u003c\/strong\u003e 10 mm (0.4 in) glass with no top frame or cross bracing inside the display.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtra depth for aquascaping:\u003c\/strong\u003e 21.7 in (55 cm) front to back.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuiet, adjustable drain:\u003c\/strong\u003e the main drain has an adjustable valve to tune out drain noise, backed by a separate emergency drain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge skimmer chamber:\u003c\/strong\u003e 11 x 20 in, with a constant water level of about 8 in and room for a skimmer plus a media or algae reactor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in the EU\u003c\/strong\u003e with FSC-certified cabinet production.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eThe Slim-Line Cabinet in Basalt Grey\u003c\/h2\u003e\n\u003cp\u003eThe Slim-Line cabinet measures 35.4 x 21.7 x 35.4 in, exactly the footprint of the tank, so the whole system takes up no more floor space than the glass. It has two doors on standard hinges with a recessed push-to-open system, and brings the OPUS G2 design in at a lower price than the Pro-Line. The feet are not height-adjustable, so set it on a level floor. With the tank in place, the OPUS G2 300 Slim-Line stands 4 ft 8 in (143 cm) tall.\u003c\/p\u003e\n\u003cp\u003eThis listing is the basalt grey cabinet, with a matt finish. Both colors use moisture-resistant boards to EN 312 with a melamine resin coating that resists scratches and impacts, and waterproof pads inside the cabinet. The wood comes from verified legal sources under ISO 38200 and is produced in FSC-certified factories with 30% recycled material. Prefer white? See the \u003ca href=\"\/products\/opus-g2-300-slim-line-with-white-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 300 Slim-Line in white\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eOPUS G2 300 Slim-Line Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay tank (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e35.4 x 21.7 x 20.9 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay volume (gross)\u003c\/th\u003e\n\u003ctd\u003e262 L (69 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eGlass\u003c\/th\u003e\n\u003ctd\u003e10 mm (0.4 in); ultra-clear front and side panes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSlim-Line cabinet (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e35.4 x 21.7 x 35.4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTotal height, tank and cabinet\u003c\/th\u003e\n\u003ctd\u003e4 ft 8 in (143 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e20 x 20 x 13.8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump volume at 8 in water level\u003c\/th\u003e\n\u003ctd\u003e52 L (14 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSkimmer chamber footprint\u003c\/th\u003e\n\u003ctd\u003e11 x 20 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRefill tank\u003c\/th\u003e\n\u003ctd\u003e4.7 x 16.5 x 20 in, 22 L (6 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRecommended return pump\u003c\/th\u003e\n\u003ctd\u003e525 GPH (2,000 L\/h)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHinges\u003c\/th\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHeight-adjustable feet\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCabinet finish\u003c\/th\u003e\n\u003ctd\u003eBasalt grey, matt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOPUS G2 300 display tank with external overflow box and ultra-clear glass on three sides\u003c\/li\u003e\n\u003cli\u003eSlim-Line cabinet in basalt grey\u003c\/li\u003e\n\u003cli\u003eReady-to-install PVC plumbing with an adjustable main drain valve and an emergency drain\u003c\/li\u003e\n\u003cli\u003eFive-chamber sump with a nylon filter sock\u003c\/li\u003e\n\u003cli\u003eSeparate 6-gallon refill tank\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot included: return pump, protein skimmer, lighting, heaters, circulation pumps, auto top-off, rock and sand.\u003c\/p\u003e\n\n\u003ch2\u003eHow the OPUS G2 300 Sump Works\u003c\/h2\u003e\n\u003cp\u003eWater leaves the display through the hidden overflow into the sump's sedimentation chamber, then passes through the nylon filter sock. The third chamber is the main filter chamber: it holds a constant water level of about 8 in (21 cm) and has room for a protein skimmer and a reactor. A bubble trap follows, and the final return chamber is where the return pump sits and where evaporation shows up, so that is where an auto top-off replaces water from the refill tank.\u003c\/p\u003e\n\u003cp\u003eThe separate refill tank is 20 in (50 cm) tall, and Nyos sizes it to hold about a week of RO water.\u003c\/p\u003e\n\n\u003ch2\u003eRecommended Equipment for the OPUS G2 300 (Sold Separately)\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtein skimmer:\u003c\/strong\u003e the \u003ca href=\"\/products\/quantum-160-protein-skimmer-nyos-1\"\u003eNyos Quantum 160\u003c\/a\u003e, whose 7.3 x 9.4 in footprint fits the 300's skimmer chamber. Compare all \u003ca href=\"\/collections\/nyos-protein-skimmers\"\u003eNyos Quantum protein skimmers\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReturn pump:\u003c\/strong\u003e about 525 GPH (2,000 L\/h), Nyos's recommendation for every OPUS G2 size. Shop \u003ca href=\"\/collections\/return-pumps\"\u003ereturn pumps\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCirculation:\u003c\/strong\u003e roughly 1,400 to 2,750 GPH of total flow from \u003ca href=\"\/collections\/powerheads\"\u003epowerheads\u003c\/a\u003e, which is 20 to 40 times the display volume per hour for a mixed reef.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating:\u003c\/strong\u003e as a rule of thumb, 250 to 425 W total, split across two \u003ca href=\"\/collections\/heaters-chillers-and-thermometers\"\u003eaquarium heaters\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto top-off:\u003c\/strong\u003e the refill tank is included but the controller is not. Add an \u003ca href=\"\/collections\/auto-top-off\"\u003eauto top-off system\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLighting:\u003c\/strong\u003e choose a reef light sized for a 35.4 in long, 21.7 in deep tank from our \u003ca href=\"\/collections\/aquarium-lighting\"\u003eaquarium lighting\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eNyos OPUS G2 300 Slim-Line FAQ\u003c\/h2\u003e\n\u003ch3\u003eWhat are the dimensions of the Nyos OPUS G2 300 Slim-Line?\u003c\/h3\u003e\n\u003cp\u003eThe display tank is 35.4 x 21.7 x 20.9 in (L x W x H). The Slim-Line cabinet is 35.4 x 21.7 x 35.4 in, and the complete system stands 4 ft 8 in (143 cm) tall. The sump inside the cabinet measures 20 x 20 x 13.8 in.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between the OPUS G2 300 Pro-Line and Slim-Line?\u003c\/h3\u003e\n\u003cp\u003eThe tank, sump, plumbing and refill tank are identical; only the cabinet changes. The Pro-Line cabinet (38.8 x 25.8 x 35.4 in) is larger than the tank for extra storage and adds BLUM 125° soft-close hinges, 38 mm solid doors, height-adjustable feet and a frame that hides the sand line. The Slim-Line cabinet (35.4 x 21.7 x 35.4 in) matches the tank footprint, uses standard hinges and costs less. See the \u003ca href=\"\/products\/opus-g2-300-pro-line-with-grey-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 300 Pro-Line in basalt grey\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eHow much water does the OPUS G2 300 hold?\u003c\/h3\u003e\n\u003cp\u003eThe display holds 262 L (69 gal) gross and the sump holds 52 L (14 gal) at its 8 in operating level, for about 83 gallons of gross system volume before rock and sand displace some of it.\u003c\/p\u003e\n\u003ch3\u003eDoes the OPUS G2 300 come with an auto top-off?\u003c\/h3\u003e\n\u003cp\u003eNo. It includes a separate 6-gallon refill tank that holds about a week of RO water, but the auto top-off controller and sensor are sold separately. Evaporation shows up in the sump's return chamber, so that is where the ATO sensor goes.\u003c\/p\u003e\n\u003ch3\u003eWhich protein skimmer fits the OPUS G2 300?\u003c\/h3\u003e\n\u003cp\u003eWe recommend the \u003ca href=\"\/products\/quantum-160-protein-skimmer-nyos-1\"\u003eNyos Quantum 160\u003c\/a\u003e. Its 7.3 x 9.4 in footprint fits the 300's 11 x 20 in skimmer chamber, which holds a constant water level of about 8 in.\u003c\/p\u003e\n\u003cp\u003eCompare all four sizes and both cabinet lines in our \u003ca href=\"\/collections\/nyos-aquariums\"\u003eNyos OPUS G2 aquarium collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Nyos","offers":[{"title":"Default Title","offer_id":52469968601386,"sku":"OPG2-1576","price":1999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-drop-ship-opus-g2-300-slim-line-grey-nyos-1256986747.jpg?v=1788463454"},{"product_id":"opus-g2-300-slim-line-with-white-cabinet-aquarium-plumbing-sump-stand-kit","title":"OPUS G2 300 Slim-Line Aquarium (69 Gal) - White - Nyos","description":"\u003cp\u003eThe \u003cstrong\u003eNyos OPUS G2 300 Slim-Line\u003c\/strong\u003e in white is a complete reef aquarium system in the smallest possible footprint: a rimless, ultra-clear 69-gallon display with a hidden overflow on a cabinet that matches the tank exactly, plus ready-to-install PVC plumbing, a five-chamber sump and a separate refill tank.\u003c\/p\u003e\n\u003cp\u003eThe OPUS G2 300 is the 90 cm (35.4 in) model, a three-foot-class reef holding 262 L (69 gal) gross in the display. At 21.7 in deep it has more front-to-back room than a typical 18-inch-deep 3-foot tank, so there is space for a multi-island aquascape and coral growth without crowding the glass.\u003c\/p\u003e\n\n\u003ch2\u003eNyos OPUS G2 300 Slim-Line Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHidden overflow:\u003c\/strong\u003e the overflow box sits outside the tank, recessed into the back pane, so no overflow box takes up aquascaping space inside the display and the back pane is easy to keep clean.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-clear glass on three sides:\u003c\/strong\u003e the front and both side panes are ultra-clear glass with a much weaker green tint than standard glass, so fish and coral colors look true.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear edges and a deep blue back pane:\u003c\/strong\u003e only transparent silicone is used in the display, and the tinted back pane creates a sense of depth once the lights are on.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRimless pool tank:\u003c\/strong\u003e 10 mm (0.4 in) glass with no top frame or cross bracing inside the display.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtra depth for aquascaping:\u003c\/strong\u003e 21.7 in (55 cm) front to back.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuiet, adjustable drain:\u003c\/strong\u003e the main drain has an adjustable valve to tune out drain noise, backed by a separate emergency drain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge skimmer chamber:\u003c\/strong\u003e 11 x 20 in, with a constant water level of about 8 in and room for a skimmer plus a media or algae reactor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in the EU\u003c\/strong\u003e with FSC-certified cabinet production.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eThe Slim-Line Cabinet in White\u003c\/h2\u003e\n\u003cp\u003eThe Slim-Line cabinet measures 35.4 x 21.7 x 35.4 in, exactly the footprint of the tank, so the whole system takes up no more floor space than the glass. It has two doors on standard hinges with a recessed push-to-open system, and brings the OPUS G2 design in at a lower price than the Pro-Line. The feet are not height-adjustable, so set it on a level floor. With the tank in place, the OPUS G2 300 Slim-Line stands 4 ft 8 in (143 cm) tall.\u003c\/p\u003e\n\u003cp\u003eThis listing is the white cabinet, with a matt finish. Both colors use moisture-resistant boards to EN 312 with a melamine resin coating that resists scratches and impacts, and waterproof pads inside the cabinet. The wood comes from verified legal sources under ISO 38200 and is produced in FSC-certified factories with 30% recycled material. Prefer basalt grey? See the \u003ca href=\"\/products\/opus-g2-300-slim-line-with-grey-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 300 Slim-Line in basalt grey\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eOPUS G2 300 Slim-Line Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay tank (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e35.4 x 21.7 x 20.9 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay volume (gross)\u003c\/th\u003e\n\u003ctd\u003e262 L (69 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eGlass\u003c\/th\u003e\n\u003ctd\u003e10 mm (0.4 in); ultra-clear front and side panes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSlim-Line cabinet (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e35.4 x 21.7 x 35.4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTotal height, tank and cabinet\u003c\/th\u003e\n\u003ctd\u003e4 ft 8 in (143 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump (L x W x H)\u003c\/th\u003e\n\u003ctd\u003e20 x 20 x 13.8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSump volume at 8 in water level\u003c\/th\u003e\n\u003ctd\u003e52 L (14 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSkimmer chamber footprint\u003c\/th\u003e\n\u003ctd\u003e11 x 20 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRefill tank\u003c\/th\u003e\n\u003ctd\u003e4.7 x 16.5 x 20 in, 22 L (6 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRecommended return pump\u003c\/th\u003e\n\u003ctd\u003e525 GPH (2,000 L\/h)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHinges\u003c\/th\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHeight-adjustable feet\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCabinet finish\u003c\/th\u003e\n\u003ctd\u003eWhite, matt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOPUS G2 300 display tank with external overflow box and ultra-clear glass on three sides\u003c\/li\u003e\n\u003cli\u003eSlim-Line cabinet in white\u003c\/li\u003e\n\u003cli\u003eReady-to-install PVC plumbing with an adjustable main drain valve and an emergency drain\u003c\/li\u003e\n\u003cli\u003eFive-chamber sump with a nylon filter sock\u003c\/li\u003e\n\u003cli\u003eSeparate 6-gallon refill tank\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot included: return pump, protein skimmer, lighting, heaters, circulation pumps, auto top-off, rock and sand.\u003c\/p\u003e\n\n\u003ch2\u003eHow the OPUS G2 300 Sump Works\u003c\/h2\u003e\n\u003cp\u003eWater leaves the display through the hidden overflow into the sump's sedimentation chamber, then passes through the nylon filter sock. The third chamber is the main filter chamber: it holds a constant water level of about 8 in (21 cm) and has room for a protein skimmer and a reactor. A bubble trap follows, and the final return chamber is where the return pump sits and where evaporation shows up, so that is where an auto top-off replaces water from the refill tank.\u003c\/p\u003e\n\u003cp\u003eThe separate refill tank is 20 in (50 cm) tall, and Nyos sizes it to hold about a week of RO water.\u003c\/p\u003e\n\n\u003ch2\u003eRecommended Equipment for the OPUS G2 300 (Sold Separately)\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtein skimmer:\u003c\/strong\u003e the \u003ca href=\"\/products\/quantum-160-protein-skimmer-nyos-1\"\u003eNyos Quantum 160\u003c\/a\u003e, whose 7.3 x 9.4 in footprint fits the 300's skimmer chamber. Compare all \u003ca href=\"\/collections\/nyos-protein-skimmers\"\u003eNyos Quantum protein skimmers\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReturn pump:\u003c\/strong\u003e about 525 GPH (2,000 L\/h), Nyos's recommendation for every OPUS G2 size. Shop \u003ca href=\"\/collections\/return-pumps\"\u003ereturn pumps\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCirculation:\u003c\/strong\u003e roughly 1,400 to 2,750 GPH of total flow from \u003ca href=\"\/collections\/powerheads\"\u003epowerheads\u003c\/a\u003e, which is 20 to 40 times the display volume per hour for a mixed reef.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating:\u003c\/strong\u003e as a rule of thumb, 250 to 425 W total, split across two \u003ca href=\"\/collections\/heaters-chillers-and-thermometers\"\u003eaquarium heaters\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto top-off:\u003c\/strong\u003e the refill tank is included but the controller is not. Add an \u003ca href=\"\/collections\/auto-top-off\"\u003eauto top-off system\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLighting:\u003c\/strong\u003e choose a reef light sized for a 35.4 in long, 21.7 in deep tank from our \u003ca href=\"\/collections\/aquarium-lighting\"\u003eaquarium lighting\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eNyos OPUS G2 300 Slim-Line FAQ\u003c\/h2\u003e\n\u003ch3\u003eWhat are the dimensions of the Nyos OPUS G2 300 Slim-Line?\u003c\/h3\u003e\n\u003cp\u003eThe display tank is 35.4 x 21.7 x 20.9 in (L x W x H). The Slim-Line cabinet is 35.4 x 21.7 x 35.4 in, and the complete system stands 4 ft 8 in (143 cm) tall. The sump inside the cabinet measures 20 x 20 x 13.8 in.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between the OPUS G2 300 Pro-Line and Slim-Line?\u003c\/h3\u003e\n\u003cp\u003eThe tank, sump, plumbing and refill tank are identical; only the cabinet changes. The Pro-Line cabinet (38.8 x 25.8 x 35.4 in) is larger than the tank for extra storage and adds BLUM 125° soft-close hinges, 38 mm solid doors, height-adjustable feet and a frame that hides the sand line. The Slim-Line cabinet (35.4 x 21.7 x 35.4 in) matches the tank footprint, uses standard hinges and costs less. See the \u003ca href=\"\/products\/opus-g2-300-pro-line-with-white-cabinet-aquarium-plumbing-sump-stand-kit\"\u003eOPUS G2 300 Pro-Line in white\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eHow much water does the OPUS G2 300 hold?\u003c\/h3\u003e\n\u003cp\u003eThe display holds 262 L (69 gal) gross and the sump holds 52 L (14 gal) at its 8 in operating level, for about 83 gallons of gross system volume before rock and sand displace some of it.\u003c\/p\u003e\n\u003ch3\u003eDoes the OPUS G2 300 come with an auto top-off?\u003c\/h3\u003e\n\u003cp\u003eNo. It includes a separate 6-gallon refill tank that holds about a week of RO water, but the auto top-off controller and sensor are sold separately. Evaporation shows up in the sump's return chamber, so that is where the ATO sensor goes.\u003c\/p\u003e\n\u003ch3\u003eWhich protein skimmer fits the OPUS G2 300?\u003c\/h3\u003e\n\u003cp\u003eWe recommend the \u003ca href=\"\/products\/quantum-160-protein-skimmer-nyos-1\"\u003eNyos Quantum 160\u003c\/a\u003e. Its 7.3 x 9.4 in footprint fits the 300's 11 x 20 in skimmer chamber, which holds a constant water level of about 8 in.\u003c\/p\u003e\n\u003cp\u003eCompare all four sizes and both cabinet lines in our \u003ca href=\"\/collections\/nyos-aquariums\"\u003eNyos OPUS G2 aquarium collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Nyos","offers":[{"title":"Default Title","offer_id":52469969715498,"sku":"OPG2-1569","price":1999.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/nyos-drop-ship-opus-g2-300-slim-line-white-nyos-1256986746.jpg?v=1788463332"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/collections\/nyos_reefing_logo_web.png?v=1688750387","url":"https:\/\/topshelfaquatics.com\/collections\/nyos.oembed?page=2","provider":"Top Shelf Aquatics ","version":"1.0","type":"link"}