Pool Shock
Raise your chlorine level quickly to achieve a clear and healthy pool. Chlorine, chlorine-free and multi-purpose shock are all available in one pound bags. Chlorine-free shock allows you to swim in the pool almost immediately. Generally, one pound of powdered shock properly treats 10,000 gallons of pool water. You should use shock routinely all season long.
Shock your pool at night to make sure the chemicals work the way they were meant to.