1-888-9-WEBPETS
(1-888-993-2738)
Certified Seal
Dogs Cats Fish Birds Reptiles Small Pets Pond

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.

Grid List

Set Ascending Direction

Items 1-10 of 12

per page
  1. 1
  2. 2
  1. Korallen-Zucht ZEOvit Coral Vitalizer Coral Food - 50ml

    Korallen-Zucht ZEOvit Coral Vitalizer Coral Food

    Read 7 Reviews

    Write a Review

    Unlike many coral foods, Coral Vitalizer interacts with your corals by directly satisfying their carbon demands and reducing the need to harbor massive densities of tissue zooxanthellae (symbiotic algae). Resulting is an increased...
    FROM ONLY
    $49.99
  2. Seachem Laboratories Prime - 250mL

    Seachem Laboratories Prime

    Read 36 Reviews

    Write a Review

    Ensure that your fishes are enjoying a clean and healthy environment inside the tank by simply pouring in a daily dose of the Seachem Prime from Pet Store . This solution comes in a 250-milliliter bottle that can treat more tha...
    FROM ONLY
    $3.09
  3. Korallen-Zucht ZEObak Nutrient Additive - 50ml

    Korallen-Zucht ZEObak Nutrient Additive - 50ml

    Be First to Review

    This might sound like a far-fetched theory, but some bacteria are good for your aquarium. Some micro-organisms like plankton provide the nutrients your reefs need to be healthy and thrive. And many of them can even serve as antibo...
    ONLY
    $70.00
  4. Korallen-Zucht ZEOfood 7 Coral Food w/ Amino Acids - 50ml

    Korallen-Zucht ZEOfood 7 Coral Food w/ Amino Acids

    Read 2 Reviews

    Write a Review

    The Korallen-Zucht Zeofood 7 Coral Food with Amino Acids Pet Store gives you a wonderful product that your marine rocks can use as a source of their diet and nourishment. This solution helps encourage the growth of friendly micr...
    FROM ONLY
    $19.99
  5. Korallen-Zucht ZEOvit Coral Vitalizer Coral Food - 50ml

    Korallen-Zucht ZEOvit Coral Vitalizer Coral Food - 50ml

    Unlike many coral foods, Coral Vitalizer interacts with your corals by directly satisfying their carbon demands and reducing the need to harbor massive densities of tissue zooxanthellae (symbiotic algae). Resulting is an increased...
    ONLY
    $49.99
  6. Korallen-Zucht ZEOvit Sponge Power - 50ml

    Korallen-Zucht ZEOvit Sponge Power

    Read 5 Reviews

    Write a Review

    Sponge Power is the first product of its kind – charged specifically with the task of maintaining and boosting the growth of all your filter feeders including clams, feather duster worms, sponges and tunicates. As an added benefit...
    FROM ONLY
    $39.99
  7. Seachem Laboratories Prime - 50mL

    Seachem Laboratories Prime - 50mL

    Be First to Review

    Prime? is the complete and concentrated conditioner for both fresh and salt water. Prime? removes chlorine, chloramine and ammonia. Prime? converts ammonia into a safe, non-toxic form that is readily removed by the tank?s biofilt...
    ONLY
    $3.09
  8. Tetra Safestart Freshwater 50 mL

    Tetra Safestart Freshwater

    Be First to Review

    Immediately add fish to your new freshwater aquarium with Tetra SafeStart. Live nitrifying bacteria work instantly to remove ammonia and nitrite. Patented formula helps to seed your aquarium filter with nitra-digesting bacteria. S...
    FROM ONLY
    $3.71
  9. Korallen-Zucht ZEOfood 7 Coral Food w/ Amino Acids - 50ml

    Korallen-Zucht ZEOfood 7 Coral Food w/ Amino Acids - 50ml

    The Korallen-Zucht Zeofood 7 Coral Food with Amino Acids Pet Store gives you a wonderful product that your marine rocks can use as a source of their diet and nourishment. This solution helps encourage the growth of friendly micr...
    ONLY
    $19.99
  10. Korallen-Zucht ZEOvit Sponge Power - 50ml

    Korallen-Zucht ZEOvit Sponge Power - 50ml

    Sponge Power is the first product of its kind – charged specifically with the task of maintaining and boosting the growth of all your filter feeders including clams, feather duster worms, sponges and tunicates. As an added benefit...
    ONLY
    $39.99

Grid List

Set Ascending Direction

Items 1-10 of 12

per page
  1. 1
  2. 2