Leisure Time Spa Shock Renew Non-Chlorine Shock (RENU2 ) Clears cloudy water and eliminates odors and contaminants Compatible with chlorine, bromine, ozone and mineral purification systems For more than 25 years, Leisure Time has been the premier name in spa water care Economical bulk package Destroys microorganisms, soaps, deodorants and oils Buffered to prevent pH fluctuations Prevents chloramine build up This item is not for sale in Catalina Island