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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 Ammo-Lock 16oz

    Aquarium Pharmaceuticals Ammo-Lock

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    A patented water conditioner that works instantly, in both fresh and saltwater, to detoxify ammonia and remove chlorine and chloramines. Locks up ammonia in a non-toxic form until it can be broken down by the tank's natural biolog...
    FROM ONLY
    $8.99
  2. Aquarium Pharmaceuticals Stress Coat 16oz

    Aquarium Pharmaceuticals Stress Coat

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    Make sure that your aquarium fish and plants get the best quality of aquarium water. Use the Aquarium Pharmaceuticals Stress Coat from Pet Store the first time you set up your aquarium, as well as every time you change the aquar...
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    $6.99
  3. Aquarium Pharmaceuticals Algaefix 4oz

    Aquarium Pharmaceuticals Algaefix

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    A revolutionary new product specially developed to control many types of algae in freshwater aquariums containing live plants. Effectively controls green water algae blooms. Keeps freshwater aquariums clean and clear. Can be used ...
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    $3.54
  4. Aquarium Pharmaceuticals® Tap Water Conditioner (4 oz.)

    Aquarium Pharmaceuticals® API Tap Water Conditioner (4 oz.)

    Let's face it, the health of your aquarium system centers almost solely on the health of your aquarium's water. Unhealthy water equals stressed out and, eventually, diseased fish and sick plants. Of course, the most common way to ...
    ONLY
    $2.79
  5. Aquarium Pharmaceuticals Stress Coat Marine 8 oz

    Aquarium Pharmaceuticals® API Stress Coat Marine 8 oz

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    Fish & Tap Water Conditioner that removes chlorine, chloramines and ammonia from tap water in a Marine tank. Stress Coat® Marine is the only marine water conditioner with the healing power of aloe vera. Developed for use with a pr...
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    $4.62
  6. Aquarium Pharmaceuticals API Quick Start - 16 oz

    Aquarium Pharmaceuticals® API Quick Start - 16 oz

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    In a new aquarium, harmful ammonia and nitrite build up from fish waste, often resulting in fish loss. The unique, patented nitrifying bacteria in API Quick Start are scientifically proven to quickly consume ammonia and nitrite to...
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    $14.99
  7. Aquarium Pharmaceuticals Stress Coat 8oz

    Aquarium Pharmaceuticals® API Stress Coat 8oz

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    Acts as a liquid bandage to prevent the loss of essential electroytes; protects damaged tissue against disease-causing organisms. Helps heal torn fins & skin wounds. Use when setting up aquarium or changing water&#...
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    $5.44
  8. Aquarium Pharmaceuticals Ammo-Lock 16oz

    Aquarium Pharmaceuticals® API Ammo-Lock 16oz

    A patented water conditioner that works instantly, in both fresh and saltwater, to detoxify ammonia and remove chlorine and chloramines. Locks up ammonia in a non-toxic form until it can be broken down by the tank`s natural biolog...
    ONLY
    $8.99
  9. Aquarium Pharmaceuticals Tap Water Conditioner 1gal

    Aquarium Pharmaceuticals® API 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...
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    $29.99
  10. Aquarium Pharmaceuticals Stress Zyme 16oz

    Aquarium Pharmaceuticals® API Stress Zyme 16oz

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    Want to have a cleaner and healthier aquarium? Give your pets the best environment with the Aquarium Pharmaceuticals Stress Zyme from Pet Store . This product comes in a sixteen-ounce bottle, which you should only store in room t...
    ON SALE
    $10.49

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