There are billions of tiny suspended particles in pool and spa water that are not removed by the filter, often giving the water a cloudy appearance. The organic polymers in HASA’s Eco-Safe Water Clarifier attract the billions of tiny particles in pool and spa water, neutralizing them, and causing them to agglomerate into particles large enough for the filter to remove. The result: water so clear it sparkles. HASA’s Eco-Safe Water Clarifier may be used with other chemicals at any pH. The pool may be used immediately after treatment.