This fast acting granular product can be broadcast directly into your pool but works best if first dissolved in a bucket of water. It restores sparkle and sheen to pool water as it kills germs, destroys algae and bacteria and destroys organic contaminants. Keeps your pool sparkling clean and clear. 65% Calcium Hypochlorite. ** $6 REBATE IF PURCHASED ALONE - $12 IF PURCHASED WITH REGAL ALGAECIDE 60**