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 

Available in 1 lb bags packed 6, 12, and 24.

Robelle Oxidizing Shock & Swim is a non-chlorine shock that will not affect chlorine levels or pH levels. Swim 15 minutes later! This extremely powerful long-lasting oxidizer is perfect for weekly maintenance, destroying organic contaminants and chloramines and eliminating chlorine odors. Robelle Shock & Swim is compatible with bromine.

100% Monopersulfate

Available in 1lb bags packed 6, 12, and 24.

Robelle Non-Chlorine Blast is a oxidizing shock that will not affect chlorine levels or pH levels. Swim 15 minutes later! This extremely powerful long-lasting shock is perfect for weekly maintenance, destroying organic contaminants and chloramines and eliminating chlorine odors. Robelle Non-Chlorine Blast is compatible with bromine. Packaged in a container that is easy to use, senior friendly, with a child resistant lid.

100% Potassium Monopersulfate

Available in a 2 lb container.

Robelle Shock Treat is a fast acting, highly concentrated liquid chlorine shock. Quick and easy to use liquid shock is perfect for 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.

12.5% Sodium Hypochlorite

Available in a 1 gallon container packed 4.