Leisure Time Renew Non-Chlorine Shock for Spas and Hot Tubs, 2.2-Pounds

Spa Shock Treatment is a non-chlorine product that eliminates chlorine or bromine odor by oxidizing used sanitizer from the water. The use of this product allows sanitizers to work more efficiently and increases the clarity of the spa water. (Shock Treatment does not replace the need for an EPA approved sanitizer.)You may also like Leisure Time 1 Qt. Defender for Spas and Hot Tubs.