Shock treatment
Superchlorination is needed when cloudy water, strong chlorine odors, eye irritation, or high levels of combined chlorine are encountered.
To kill algae when algae growth is evident in the pool:
NEVER ALLOW UNDISSOLVED PRODUCT TO REST IN CONTACT WITH BLEACHABLE POOL SURFACES.
Note: In shallow pools with a depth less than 4 feet or when water is less than 65° F, predissolve this product and apply evenly around the edge of the pool. Dissolve this product outdoors in a clean plastic bucket, stirring with a clean plastic or wooden spoon. Add this product to water; NEVER add water to product. NEVER add more than 1 pound of this product to less than 3 gallons of cool water.
NEVER MIX THIS PRODUCT WITH ANY OTHER PRODUCT.
Re-entry into treated swimming pool is prohibited above levels of 4 ppm chlorine due to risk of bodily injury.