Technical Pool Solutions Sand Filter Cleaner 32 oz Removes Contamination for Better Filtration, Reduced Chemical Consumption, and Cleaner, Clearer Pool Water! No Need to Change Sand; Just Clean it! After Using This Cleaner Your Sand Will Be Returned to New Condition! Increase Equipment Life and Efficiency! The Pool Filter Harbors More Bacteria and Other Contaminants Than the Entire Pool! Safer, healthier pool water. The pool filter harbors the most bacteria and other contaminants in the pool. A clean filter will provide safer pool water decreasing the risk of recreational water illnesses.