API Bio Chem Zorb

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Containing a superior blend of resins and activated carbon that removes aquarium pollutants – including colors, odors, heavy metals, and toxic gases – API Bio-Chem ZORB makes aquar ium water crystal clear. Product also removes light blocking impurities for improved growth of corals in saltwater, and for plants in freshwater aquariums. DIRECTIONS FOR USE: Rinse pouch under tap water to remove the loose dust. Pouch does not need to rinse clear. Place pouch in path of water flow in the aquarium filter. Replace every 2 months, or sooner if aquarium is heavily stocked and/or colors or odors are detected. Show more