Sure Shock  (Calcium Hypochlorite-Borate Blend) is our most powerful shock. It is recommended when high levels of free chlorine are needed. Because of the super chlorinating characteristics of  Sure Shock , swimming is not recommended until the free chlorine has dropped down to approximately 4 ppm. Dissolve in warm water before applying to avoid bleaching vinyl liners. 

Fast Shock (Lithium Hypochlorite) dissolves fast to oxidize contaminants without raising the free chlorine to unsafe levels. It is safe to use in vinyl liner pools because it dissolves so quickly.

Non-Chlorine Oxidizing Shock (Potassium Monopersulfate) is a powerful oxidizer which destroys organic matter in the water and prevents the formation of combined chlorine. Since it contains no chlorine, swimming may resume immediately after use. 

Multi-Shock (Dichlor-Potassium Monopersulfate Blend) is a combo shock that provides the benefits of both granular chlorine ( dichlor ) and non-chlorine shock. It helps control algae and bbacteria growth  and prevents the formation of combined chlorine.