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

6 Item(s)

per page
  1. Tetra Easybalance 250mL

    Tetra Easybalance 250mL

    Be First to Review

    EasyBalance with Nitraban offers a number of benefits, including reduction of phosphate; stabilization of pH and KH; and replenishment of essential trace elements and minerals. Nitraban adds nitrate reducing granules to the...
    ONLY
    $4.35
  2. Tetra Water Clarifier 100mL

    Tetra Water Clarifier

    Be First to Review

    Clear cloudy or hazy aquarium water in just a few hours with TetraAqua Water Clarifier.  Safe for all freshwater aquariums, TetraAqua Water Clarifier is phosphate free.  It will not affect biofiltration, pH or any other...
    FROM ONLY
    $2.80
  3. 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
    $4.67
  4. Tetra Water Clarifier 250mL

    Tetra Water Clarifier 250mL

    Be First to Review

    Clear cloudy or hazy aquarium water in just a few hours with TetraAqua Water Clarifier. Safe for all freshwater aquariums, TetraAqua Water Clarifier is phosphate free. It will not affect biofiltration, pH or any other...
    ONLY
    $4.40
  5. Tetra Safestart Freshwater 250 mL

    Tetra Safestart Freshwater 250 mL

    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...
    ONLY
    $11.49
  6. Tetra Easybalance 100mL

    Tetra Easybalance

    Be First to Review

    EasyBalance with Nitraban offers a number of benefits, including reduction of phosphate; stabilization of pH and KH; and replenishment of essential trace elements and minerals.  Nitraban adds nitrate reducing granules to the...
    FROM ONLY
    $3.05

Grid List

Set Ascending Direction

6 Item(s)

per page