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Additives & Supplements

Aquarium Supplies

Fish Additives & Supplements

We carry a wide variety of additives produced by the most respected companies serving the aquarium hobby, such as Kent Marine, E.S.V., Seachem and Two Little Fishies. 2-part Calcium and Alkalinity Supplements are popular additives among reef keepers since calcium and alkalinity tend to deplete quickly in a reef aquarium.

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  1. Aquarium Pharmaceuticals Stress Zyme 64oz

    Aquarium Pharmaceuticals Stress Zyme 64oz

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    Improves the development of the biological filter and helps clean a dirty aquarium. Contains over 300 million live bacteria per teaspoonful. Breaks down organic compounds that cause dangerous conditions such as ammonia and nitrite...
    ON SALE

    Was: $29.99

    $23.99

  2. Aquarium Pharmaceuticals API Quick Start 16 oz. & Stress Coat 16 oz.

    Aquarium Pharmaceuticals API Quick Start 16 oz. & Stress Coat 16 oz.

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    Aquarium Pharmaceuticals Quick Start 16 oz In a new aquarium, harmful ammonia and nitrite build up from fish waste, often resulting in fish loss or "new tank syndrome".The unique, patented nitrifying bacteria in QUICK START ar...
    ONLY
    $20.49
  3. Aquarium Pharmaceuticals Tap Water Conditioner 1gal

    Aquarium Pharmaceuticals Tap Water Conditioner 1gal

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    Are your fish getting sick and you can't figure out the cause? If your aquarium water looks clean enough to rule out algae or other organisms, maybe it's the water itself. If you are using tap water, use Aquarium Pharmaceuticals T...
    ONLY
    $26.86

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