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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. 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 2-Part Calcium Buffer 64oz (32oz each bottle)

    E.S.V. B-Ionic 2-Part Calcium Buffer 64oz (32oz each bottle)

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    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 powder...
    ON SALE
    $22.49
  3. E.S.V. B-Ionic 2-Part Calcium Buffer 2 gal Concentrate (1gal each bottle)

    E.S.V. B-Ionic 2-Part Calcium Buffer 2 gal Concentrate (1gal each bottle)

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    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...
    ONLY
    $33.99
  4. 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
  5. 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
  6. E.S.V. Calcium Hydroxide 14 Oz.

    E.S.V. Calcium Hydroxide 14 Oz.

    Calcium Hydroxide is the proven standard for maintaining calcium concentration and alkalinity in closed marine aquaria. The calcium provided is directly used by calcifying organisms, and the hydroxide ions provided readily convert...
    ON SALE

    Was: $12.49

    $9.99

  7. E.S.V. Calcium Hydroxide 3.5 Lbs.

    E.S.V. Calcium Hydroxide 3.5 Lbs.

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    Keep your aquarium water at its best by using the E.S.V. Calcium Hydroxide regularly. Calcium Hydroxide from Pet Store , also known as Kalkwasser Powder, effectively maintains the calcium level and alkalinity of the aquarium wate...
    ONLY
    $22.49
  8. E.S.V. Calcium Chloride 800 g

    E.S.V. Calcium Chloride 800 g

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    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
  9. E.S.V. Potassium Iodide Solution (1%) 16 oz.

    E.S.V. Potassium Iodide Solution (1%) 16 oz.

    Help your shell fishes in their molting process with E.S.V. Potassium Iodide Solution (1%) from Pet Store . This solution aids you in keeping up with the needed 0.060 mg per liter of Potassium Iodide in your tank as it is the req...
    ON SALE

    Was: $10.49

    $7.89

  10. 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

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