HTH 52002 Shock Treatment, Granule, Chlorine Pack

Shock treat your pool at least once a week to kill unwanted bacteria and algae and to give your pool the boost of chlorine it needs to keep your water clean and clear. This is an effective, multi-purpose product that sanitizes, clarifies, helps prevent algae and shock treats your pool. It is convenient, easy-to-use and won't over-stabilize your pool.