GLB 71675A 1 lb Shoxidizer® Shock Oxidizer This product is a proprietary blend of DuPont Oxone®, a powerful oxygen based oxidizer, and a chlorinating agent, combined with a pH buffer and a dry clarifi er. This unique formulation provides the benefi ts of oxygen-based oxidation, while boosting free chlorine concentrations. This one-two punch keeps water sparkling clear by oxidizing and eliminating organic contaminants. Since this product is buffered, it will not affect water balance; therefore pH and total alkalinity will remain unchanged. The addition of dry clarifi er aids the oxidation/ filtration process so water contaminants are more readily removed by routine fi ltration. This product is specially formulated to prevent dull, hazy water. Add this product to pool water every week to oxidize contaminants introduced by bathers and to maintain sparkling clear pool water.