Lo-Chlor EZ-Pour Stabilizer is an efficient way to prolong the effectiveness of chlorine in pool water. All pools lose chlorine from UV rays, and EZ-Pour is the best way to reduce the loss of chlorine to save you money and effort. This will dissolve and protect instantly with professional strength. Best of all, the Lo-Chlor EZ-Pour Stabilizer is safe to use in all types of swimming pools.