Seachem Reef Advantage Calcium 1kg/2.2lb {L-b}

Reef Advantage Calcium Is A Non-caustic (ph 8.3-8.6) Optimized Blend Of Ionic Calcium Designed To Restore And Maintain Calcium To Levels Found In Natural Seawater. Calcium And Carbonates Are Essential To All Coral Growth. If Either Becomes Deficient, Cora