HTH Shock Treatment, 5.5 lb.

This is an effective, multi-purpose product that sanitizes, clarifies, helps prevent algae in your pool. It is convenient, easy to use, and won't over-stabilize your pool. For crystal clear pool water, follow our hth 4 step pool care program: Step 1: Test and adjust pool water balance, Step 2: Sanitize, Step 3: Shock treat your pool at least once a week, and Step 4: Add algaecide regularly.