Specialty Minerals CLCT-05 Calcite Media sku-120421935

Specialty Minerals CLCT-05 calcite is an NSF Certified calcium carbonate filter medium made from naturally occurring white marble. The 478 Fl Oz Pack Of 1 is listed under All Fish Tanks and Supplies as sku-120421935, UPC 729440633493. It corrects acidic water and can be used for remineralization.

Calcite raises pH toward a noncorrosive equilibrium and, under normal conditions, does not overcorrect it. Neutralizing the water also increases hardness, so a softener may be needed after the filter. Periodic backwashing prevents packing, reclassifies the bed and maintains service rates. The source title also describes the quantity as 1/2 cubic foot.