GLB Pool Filter Cleanse – 20 lb. Pail
GLB Filter Cleanse is a multipurpose granular cleaner that cleans and unclogs swimming pool filters of grease, oils and scale through a unique combination of acids and detergents that changes color from red to yellow as it cleans. Use GLB Filter Cleanse once every couple of months during swim season. Compatible with chlorine, bromine, salt water chlorine, ozone and biguanide sanitizing systems.