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1 Gallon ARM Reactor Media - Coarse - CaribSea

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ARM Coarse Reactor Media contains calcium, carbonate, and trace elements.

  • Nearly 50x the Strontium of other brands (7390ppm)
  • Precision grading allows for maximum carbon dioxide penetration
  • No gastropod shells means the lowest phosphate content (less than 1/10th of 1ppm)
  • Highest solubility of any reactor media (metastable at 8.2)


One of the most trusted media for calcium reactors in the industry. The media is a complete solution which includes both calcium and carbonate as well as essential trace elements.


The media comes in two forms Coarse and Extra Coarse.

  • Coarse – larger size granules which are less likely to clog equipment.
  • Extra Coarse – Largest size granules and the least likely to clog equipment which results in the lowest maintenance option.


Note: All ARM media is packaged by volume in a 1-gallon container. Weights may vary from container to container, but on average one gallon will yield 8 - 10 pounds of media.

More Information
Product Name 1 Gallon ARM Reactor Media - Coarse - CaribSea
SKU 204104
UPC 008479005298
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