Description of Calcium Hypochlorite 100 lb. Drum Container. Pallet of 16 Drums.

Robelle Powdered Shock is an extra powerful shock that may be used for spring start-ups or weekly maintenance. This fast-acting shock destroys organic contaminates, kills bacteria, and controls algae by raising chlorine levels quickly. For crystal clear pool water, it is recommended to shock at night and let the pool water filter for 6-8 hours before swimming.

68% Calcium Hypochlorite.

7100