HaloSource Qt SeaKlear Phosphate Remover SeaKlear Phosphate Remover works better and does more than other phosphate removers. When you use SeaKlear Phosphate Remover with SeaKlear Algae Prevention & Remover and SeaKlear Natural Clarifier, your pool will be clear and clean, guaranteed. • Removes up to 3,000 parts per billion of orthophosphates per 20,000 gallons of water • Proven to eliminate phosphates from fertilizers, rainwater, soaps, decaying vegetation and other pollutants • Keeps salt generators working properly • Nontoxic—100 percent safe for your family and the environment • Quick, easy, cost-effective and simple to use