WILL NOT STAIN OR BLEACH POOL WALLS!
Unlike chlorine-based winterizing pool chemical kits that reduce the effectiveness of algaecide and other winterizing chemicals and can stain and bleach pool walls or damage pool liners, these kits use non-chlorine based chemicals. Kits contain a time-release floater that releases a powerful non-chlorine oxidizer into your pool for weeks after it's closed. This unique oxidizer robs the water of carbon dioxide - one of algae's primary food sources. No staining, no bleaching... just clean water! In addition, the powerful non-chlorine shock kills any contaminants. All kits are pre-measured for the specified pool size. Ensure peace of mind this fall with a top-quality non-chlorine winterizing kit from. It includes complete winterizing instructions. Don't under-estimate your pool's capacity, it's better to have more chemicals than not enough! Not for use in pools on a biguanide based sanitizing system.