BioGuard Burnout 73:

BioGuard Burnout 73 is a super chlorinator for swimming pools. With the highest percentage of calcium hypochlorite of all the BioGuard shocks this one bag treats 16,500 gallons of water making it one of the strongest shocks on the market.

Note: Never add water to product. Always add product to large quantities of water to fully dissolve. Maintain operation of your pump and filter. Treatment should be done at night or during a period when the pool is not in use. This product can be added by broadcasting the dry granules over the surface of the water at the deepest end of the pool while the pump is running.