HTH Pool Care Chlorine Granules for Swimming Pool Sanitizer, 5 lbs

HTH Pool Care Chlorine Granules Ultra, Sanitizer & Shock, Kills Bacteria & Algae, 5 lbs Get a visible sparkle and crystal clear water in just 24 hours! Traditional chlorine products contain cyanuric acid (CYA). When too much CYA builds up, it can cause over-stabilization or chlorine lock, cloud your water and cause algae growth. The Cal Hypo based formula in HTH® Chlorine Granules Ultra 5lbs provides chlorination without adding extra CYA for beautifully clear water all season. The all-in-1 action also kills bacteria and algae, clarifies and softens pool water, prevents stain and scale and provides a filter aid for the ultimate convenience in DIY pool care. This product is great for all pool types including vinyl-lined swimming pools and salt water systems. Get the ultimate in pool care convenience with this all-in-one Cal Hypo formula. It sanitizes, controls algae, clarifies, softens pool water and even prevents stain and scale to keep your swimming pool clean, clear and r