CaribSea ARM Reactor Coarse Filter Media for Aquarium – 1 Gallon – High Magnesium Aragonite Formula – Ideal for All Calcium Reactors – Supports Coral Growth Gray/Yellow Cat Comb This is a natural alternative

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CaribSea ARM Reactor Coarse Filter Media for Aquarium – 1 Gallon – High Magnesium Aragonite Formula – Ideal for All Calcium Reactors – Supports Coral Growth Gray/Yellow Cat Comb This is a natural alternativeBrand Carib Sea Liquid Volume 1 Gallons Item Weight 16 ounces Item Form Granular or Particulate Target Species Fish About this item High magnesium aragonite formula: ARM Coarse media is designed with high magnesium content, providing optimal conditions for calcium reactors. Prevents clogging: The coarse grade prevents clogging and reduces maintenance associated with fine media, ensuring smooth reactor operation. Ideal for upflow reactors: Perfect for