BioGuard Chem Out - 2 Lb (1) BioGuard Chem Out 2# Eliminates chlorine, bromine or hydrogen peroxide deposits in swimming pool water Intended to reduce swimming downtime due to high chlorine levels 4oz per 10,000 gallons of swimming pool water removes 3ppm of chlorine Chem Out is great for neutralizing chlorine or bromine when converting a swimming pool to Soft Swim