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 253

per page
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  1. E.S.V. B-Ionic 2-Part Calcium Buffer 32oz (16oz each bottle)

    E.S.V. B-Ionic 2-Part Calcium Buffer 32oz (16oz each bottle)

    B-Ionic Calcium Buffer is the original, unique, easy to use, two-component liquid supplement system. When using equal volumes of each component, the aquarist can easily maintain calcium and alkalinity levels with no mixing powders...
    ON SALE
    $12.99
  2. E.S.V. B-Ionic Calcium Buffer System Part 1 - 1 Gallon  Alkalinity Refill

    E.S.V. B-Ionic Calcium Buffer System Part 1 - 1 Gallon Alkalinity Refill

    Provide your marine pets with all the calcium they need by buying for them the E.S.V. B-Ionic Calcium Buffer System 1 Gallon Refill Part A from Pet Store . This water supplement will make sure that your fish tank contains all the...
    ONLY
    $17.99
  3. E.S.V. B-Ionic Calcium Buffer System Part 2 - 1 Gallon Calcium Refill

    E.S.V. B-Ionic Calcium Buffer System Part 2 - 1 Gallon Calcium Refill

    Component No. 2 - CALCIUM B-Ionic Calcium Buffer is the original, unique, easy to use, two-component liquid supplement system. When using equal volumes of each component, the aquarist can easily maintain calcium and alkalinity...
    ONLY
    $17.99
  4. E.S.V. Calcium Chloride 800 g

    E.S.V. Calcium Chloride 800 g

    Be First to Review

    Calcium Chloride is a very pure anhydrous grade free of phosphates and nitrates. The advantage of using Calcium Chloride as a calcium supplement in marine aquaria is its very high solubility in water. This property allows the aqua...
    ONLY
    $16.99
  5. E.S.V. B-Ionic Magnesium 32 fl oz.

    E.S.V. B-Ionic Magnesium 32 fl oz.

    Aside from calcium and organic carbon, magnesium also plays a significant role in maintaining a healthy marine life in your aquarium. Magnesium presence in your tank's water gives it stable alkalinity, as well as good pH level. As...
    ONLY
    $12.49
  6. Kent Marine African Cichlid Buffer 500g (17.6oz Jar)

    Kent Marine African Cichlid Buffer 500g (17.6oz Jar)

    Be First to Review

    Don't you just wish that there was a kind of product, which you only need to sprinkle on your tank water to make it clean? With the Kent Marine African Cichlid Buffer from Pet Store , this is more than possible. It will even remo...
    ONLY
    $11.45
  7. Kent Marine Tank Clarifier 16oz

    Kent Marine Tank Clarifier 16oz

    Be First to Review

    Marine Tank Clarifier helps maintain sparkling clear water in your marine aquarium by attaching to unsightly particulate matter for easy removal through filtration. Uses the same trusted Coralife formula. They are available in thr...
    ONLY
    $16.99
  8. Kent Marine Kalkwasser 450 g

    Kent Marine Kalkwasser 450 g

    Be First to Review

    But where will you get calcium? It's not exactly something you can buy over the counter - or can you? Actually, you can. The Kent Marine Kalkwasser from Pet Store , a calcium supplement, is readily available in the market. Th...
    ONLY
    $12.84
  9. Kent Marine Superbuffer DKH 1 kg

    Kent Marine Superbuffer DKH 1 kg

    Be First to Review

    If you want to properly stabilize the PH level of your aquarium water, then use the Kent Marine SuperBuffer DKH 1kg from Pet Store . It is a specifically designed PH buffer that adjusts and maintains PH level to its required rate...
    ONLY
    $16.03
  10. Kent Marine Super Iodide 16 oz.

    Kent Marine Super Iodide 16 oz.

    Be First to Review

    The Kent Marine Super Iodide 16 Oz from Pet Store is a supplement that will provide your aquatic animals, plants and rocks with the iodide elements they need to live and stay healthy in their artificial environment. Iodide prese...
    ONLY
    $10.49

Grid List

Set Ascending Direction

Items 1-10 of 253

per page
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5