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Supplements

(98 items)

Keeping your reef tank balanced requires more than just water changes—aquarium supplements play a key role in maintaining stable parameters and supporting coral health. From calcium and alkalinity to magnesium and trace elements, dosing the right reef supplements helps fuel coral growth, improve coloration, and maintain overall system stability. Whether you're running a mixed reef, SPS-dominated tank, or a soft coral setup, supplements are a critical part of long-term success.

 

This collection includes a wide range of saltwater aquarium supplements, including two-part dosing systems, individual elements, and complete additive lines from trusted brands. Designed to work alongside your regular maintenance routine, these products help replenish what corals and inverts consume daily. With consistent use, the right reef tank supplements can make a noticeable difference in coral vitality and system performance.

Top Aquarium Additive Picks

MicroBacter7 - Complete Bioculture - Brightwell Aquatics
MicroBacter7 - Complete Bioculture - Brightwell Aquatics
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Chemi-Pure Elite - Boyd Enterprises
Chemi-Pure Elite - Boyd Enterprises
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All-For-Reef - Tropic Marin
All-For-Reef - Tropic Marin
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4-Part Reef Care Program - Red Sea
4-Part Reef Care Program - Red Sea
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By
ByBrightwell AquaticsBoyd EnterprisesTropic MarinRed Sea
Price
Price
From $990 $1165
From $871 $1089
From $1699
From $6999
Description
Description
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Dive Deeper: Info & Tips for Aquarium Additives

Keeping a reef tank stable requires more than just water changes — over time, corals and other inhabitants deplete essential elements that need to be replenished. That’s where additives come in. Whether you’re dosing for growth, coloration, or long-term balance, the right supplements help support healthy biological processes and consistent water chemistry.

At Top Shelf Aquatics, we offer a curated selection of reef-safe additives and supplements designed to meet the needs of both beginner and advanced reef keepers. From foundational elements like calcium and alkalinity to fine-tuned trace blends, we carry solutions trusted by hobbyists and professionals alike.

Additive Types & Uses

Understanding what each additive does — and when to use it — helps keep your reef tank balanced and thriving:

  • Calcium & Alkalinity
    These are the backbone of any reef system. Corals and inverts rely on calcium to build their skeletons, while alkalinity keeps pH stable and supports overall system health. Often dosed together in a two-part solution or via calcium reactors.
  • Magnesium
    Supports the calcium/alkalinity balance and is particularly important for the health and growth of LPS corals. It also helps prevent calcium precipitation and plays a key role in stabilizing overall water chemistry.
  • Trace Elements
    These include elements like iodine, iron, manganese, and strontium — all used in very small amounts but vital for coral coloration, polyp extension, and enzyme activity. Available in broad-spectrum mixes or as targeted supplements.
  • Amino Acids
    Boost coloration, improve tissue regeneration, and support overall coral vitality. Especially helpful in low-nutrient systems or for hobbyists running heavy filtration.
  • Bacterial Supplements & Carbon Sources
    Help control nutrients by fueling beneficial bacteria. Great for nitrate and phosphate management when used correctly.
  • Iodine
    Important for overall coral health and soft tissue development. Iodine helps boost resistance to bacterial infections and is especially beneficial for soft corals and LPS.

Optimization Tips

Dosing additives without a plan can do more harm than good — here are a few tips to help you get the most out of your supplement routine:

  • Test Before You Dose
    Regular water testing is key. Before adding anything to your system, know your current levels. Overdosing elements like iodine or trace metals can stress or even harm corals.
  • Start Small, Adjust Slowly
    If you're introducing a new additive, begin with a conservative dose and monitor coral response over several days. Many elements build up gradually, so slow changes are safer.
  • Stick to a Schedule
    Stability is everything. Whether you're dosing manually or with a doser, consistency in timing and quantity helps prevent swings that could impact coral health.
  • Match Additives to Coral Type
    SPS-heavy tanks may demand balanced calcium/alkalinity dosing with additional trace support, while LPS and soft coral tanks often benefit from higher magnesium and iodine levels. Tailor your approach based on what you’re keeping.
  • Use High-Quality Brands
    Not all additives are created equal. Stick with trusted manufacturers known for purity and accuracy to avoid unexpected results.

Frequently Asked Questions

Do I need to dose additives if I’m doing regular water changes?

It depends on your coral load. In lightly stocked tanks, water changes may be enough. But in more demanding systems, additives help maintain consistent water chemistry between changes.

How do I know which additives my tank actually needs?

Start with the basics: calcium, alkalinity, and magnesium. Then monitor coral behavior and test for key parameters. Trace elements and amino acids should be added based on observed need and test results—not guesswork.

What are signs that I might be overdosing?

If you notice sudden algae blooms, cloudy water, or coral stress (like receding tissue or closed polyps), it may be a sign of additive imbalance. Double-check your dosing schedule and test results to troubleshoot.

Can I dose additives without using a dosing pump?

Yes, manual dosing is possible—just make sure you're consistent and avoid large swings by spreading doses throughout the day if needed.

What’s the best additive to boost coral color?

Stable core parameters (calcium, alkalinity, and magnesium) are essential. Amino acids and trace elements like iodine can enhance color, but only when used alongside proper lighting, flow, and nutrient management.