Keeps pool water sparkling clean. Cal-Shock makes it a breeze.

100 % Calcium Hypochlorite - 65 % available chlorine

• Use for day-to-day chlorination or as a shock treatment.
• Can be pre-dissolved for use with chemical metering pumps or hand broadcast.
• Periodic usage as a shock treatment eliminates chloramines, helps eliminate 'red-eye' and helps control resistant strains of bacteria and algae
• Will not build up stabilizers in the pool water.
• As a shock treatment, recommended 1 lb. per 10,000 gallons every week or two during the season - depending on usage.

This product is easy for you to use - and easy on your wallet.

NOTE: For orders over 25 lbs, this product may ship in multiple 25 or 50 lb containers

Shipping note: Cases of 1 lb bags can ship normal ground carrier and include free shipping. Buckets can not be shipped standard ground carrier. Those items are available for local pick up or on your local Poolblu route delivery.