Reef System R75 (55 Gal) - UNS
Buy now, pay later
Split your purchase into smaller payments with the provider you prefer. Pick your plan at checkout.
Checking out with Shop Pay? The Shop Pay screen only offers Shop Pay Installments. To pay with PayPal, Klarna, or Affirm, select Check out as guest to see every payment option, or use the PayPal button in your cart.
Shop Pay Installments
- 4 interest-free payments every 2 weeks on orders from $50 to $999.99
- 2 interest-free payments on orders from $35 to $50
- Monthly plans on orders from $150
- Check out with Shop Pay, then choose an installment plan
Payment options are offered by Affirm and are subject to an eligibility check and might not be available in all states. Monthly plans may include interest (0–36% APR). CA residents: Loans by Affirm Loan Services, LLC are made or arranged pursuant to a California Finance Lender license.
Learn more about Shop Pay InstallmentsPayPal Pay Later
- Pay in 4: 4 interest-free payments every 2 weeks on purchases from $30 to $1,500
- Pay Monthly: 3 to 24 monthly payments on purchases from $49 to $10,000
- Select PayPal in your cart or at checkout, then choose Pay Later
Pay in 4 is available to consumers upon approval and is not currently available to residents of MO. Pay Monthly is subject to consumer credit approval, with a fixed APR of 9.99–35.99%. The lender for Pay in 4 is PayPal, Inc. (NMLS #910457). The lender for Pay Monthly is WebBank.
Learn more about PayPal Pay Later
Klarna
- Pay in 4: 4 interest-free payments every 2 weeks on orders of $35 or more
- No interest or fees when you pay on time
- Choose Klarna as your payment method at checkout
Klarna Pay in 4 is subject to approval and isn't available in Hawaii, U.S. territories (excluding Puerto Rico), or for APO/FPO/DPO addresses. Late fees may apply.
Learn more about Klarna
Affirm
- Pay in 4: 4 interest-free payments every 2 weeks on eligible orders from $50
- Monthly plans with rates from 0–36% APR based on credit
- No late fees or hidden fees
- Choose Affirm as your payment method at checkout
Payment options through Affirm are provided by these lending partners: affirm.com/lenders. Your rate will be 0–36% APR based on credit and is subject to an eligibility check. Affirm Pay in 4 is 0% APR. Options depend on your purchase amount and may vary by merchant. A down payment may be required. CA residents: Loans by Affirm Loan Services, LLC are made or arranged pursuant to a California Financing Law license.
Learn more about AffirmOrder Protection
Reef Guard Eligible
Fast Delivery
Packed With Care
Expert Support
We've got your back!
Goes well with:
Aquariums are typically processed within 1–3 business days and generally take 2–4 weeks for delivery unless otherwise noted on the product description page. Some models may have extended lead times depending on manufacturer inventory and freight scheduling. Once an aquarium order has been submitted to the manufacturer for processing, it generally cannot be canceled. If a cancellation is approved after submission, there may be cancellation fees ranging from 10% of the order total up to $500 depending on the manufacturer's policy. These fees are determined by the manufacturer and are non-refundable.
*This Product is Freighted, Because of this, Free Overnight Shipping will NOT be applied*
The UNS R75 Reef System delivers a premium, ready-to-run solution for reef hobbyists who value clarity, clean design, and functional performance. Built with ultra-clear low-iron glass and signature 45° mitered edges, the R75 offers a beautiful rimless display while supporting the demands of a thriving saltwater reef or freshwater aquascape.
This all-in-one system includes a matching aluminum-framed stand with fully removable magnetic doors, an integrated multi-chamber sump, and pre-plumbed pipe fittings for quick, hassle-free setup. Whether you’re running a skimmer, refugium, or advanced filtration media, the R75’s modular layout gives you the flexibility to build your dream system without compromise.
Key Features
Aquarium Highlights
-
Dimensions: 29.53 x 19.69 x 19.69” (75 x 50 x 50cm)
-
Volume: 42.28 gallons (160L)
-
Glass Thickness: 10mm low-iron glass
-
Polished 45° mitered edges for a seamless, high-clarity rimless look
-
White bottom panel – ideal for bare-bottom setups
-
Low-profile internal overflow box with top and bottom intakes
-
Black silicone to reduce visible coraline buildup
Stand Features
-
Dimensions: 29.52 x 19.68 x 36.25” (75 x 50 x 92.1cm)
-
Durable aluminum frame with no rust or swelling
-
4 fully removable magnetic doors for easy access
-
One pull-out drawer for tool and accessory storage
-
Built-in controller board and pre-cut cable pass-throughs
-
Clean side-access to hidden wiring and equipment
-
Available in White or Grey finish
Sump Specifications
-
Dimensions: 19.69 x 16.85 x 17.72” (50 x 42.8 x 45cm)
-
Volume: 13 gallons (51L), 4 chambers
-
Adjustable baffles for skimmer and refugium water levels
-
Filter floss trap and diffuser plates reduce noise and sock maintenance
-
Gate and ball valves for flow control and equipment flexibility
-
Integrated ATO reservoir with float valve
What’s Included
-
UNS R75 Rimless Aquarium
-
UNS R75 White Stand & Pre-installed Sump
-
Pre-cut, pre-glued Pipe & Union Fittings
-
Outlet Nozzles
-
Velcro Strips for wire management
Comparing UNS reef systems
The R75 is the 55 gallon system in the UNS lineup. Step up to the R90, R120 or R150 as your footprint allows. Compare the full UNS reef system range or other 30-100 gallon aquariums.