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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. Continuum Aquatics Reef-Basis Calcium Dry Form - 200 grams

    Continuum Aquatics Reef-Basis Calcium Dry Form

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    Reef•Basis Calcium Description: Dry Calcium Supplement for Marine Aquariums Features: • Provides bioavailable calcium for corals and other invertebrates • Phosphate, Nitrate & Silicate Free • Contains no acetates, gl...
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    $8.99
  2. Brightwell Aquatics Calcion Dry Calcium 1.7lbs 800g

    Brightwell Aquatics Calcion-P - Dry Calcium Supplement for Reef Aquaria 800g / 1.7lbs

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    • High-purity powdered calcium. • Increases the concentration of calcium in marine aquarium water to provide corals and other reef-building invertebrates with one of the most important elements requir...
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    $17.69
  3. Brightwell Aquatics Calcion-P Dry Calcium Supplement for Reef Aquaria 400g / 14.1oz

    Brightwell Aquatics Calcion-P Dry Calcium Supplement for Reef Aquaria

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    Use the Brightwell Aquatics Calcion-P - Dry Calcium Supplement for Reef Aquaria Pet Store to provide your saltwater tank with sufficient amount of calcium. This product is made of high grade ingredients that are safe for fish, a...
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    $13.49
  4. Kent Marine Turbo Calcium 800 g (1 Qt)

    Kent Marine Turbo Calcium 800 g (1 Qt)

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    Do you need calcium supplements for your corals and other hard-shelled marine pets? If you want a dry calcium source that will immediately raise the calcium levels for your aquatic creatures to dig in, you must have Kent Marine Tu...
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    $20.99
  5. Kent Marine Turbo Calcium 200 g

    Kent Marine Turbo Calcium

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    Description: TURBO CALCIUM provides bio-available calcium for lush growth of purple, pink and green calcareous algaes, snails, hard tube worms and clams. Corals will open more and stay attached to their skeletons better, with re...
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    $13.91
  6. Brightwell Aquatics Elemental Dry Reef Building Complex 1.7lb 800g

    Brightwell Aquatics Elemental Dry Reef Building Complex 1.7lb 800g

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    • Complete source of the elements and molecules directly used by corals, clams, and other reef-building invertebrates and organisms to create skeletal material and grow. • Provides calcium, strontium, magn...
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    $17.69
  7. Brightwell Aquatics Elemental - Dry Reef-Building Complex for Corals, Clams, etc. 400g / 14.1oz

    Brightwell Aquatics Elemental - Dry Reef-Building Complex for Corals, Clams, etc.

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    Want to make sure that your aquarium can sustain your corals and reefs? Then here's a product that can offer you the perfect solution! The Brightwell Aquatics Elemental - Dry Reef-Building Complex for Corals, Clams, Etc 400 g / 14...
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    $13.49

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