Calcite (Calcium Carbonate) pH Filter Media 1/2 cu. ft

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About This 1/2 cubic foot of Calcite pH filter media made from naturally occuring calcium carbonate Slow reaction rate allows for controlled pH correction Requires 8 GPM per sq. fo ot of tank area for backwashing and 6 GPM service flow rate Enough media to fill 8" x 44" tank system...see product description for additional tank sizes Media typically needs replenished annually depending on pH level, water usage, and water chemistry Show more