In The Swim Chlorine Pool Shock 24 X 1 lb. bags
This powerful chlorinated shock treatment is great for Spring start-up and ideal for a quick chlorine boost when fast-action is needed!  68% Calcium Hypochlorite. Compare to Sock It, Burn Out, Super-Chlorinator and Power Powder.  Weekly Dosage: 1 lb. per 10,000 gallons.  Dilute with water before before evenly broadcasting in to swimming pool water.