Rx Clear Algaecide 60 Plus Liquid for Swimming Pools, 4 Pack

Effective in killing green, blue-green, mustard, black, in addition to over 20,000 strains of algae Non-metallic, non-foaming, doesn't stain the surface of the pool, and leaves zero residue Contains polyethylene dichloride, which coats the algae cell and prevents carbon dioxide from getting in Works to keep algae at bay without making your swimming pool filled with foam Each bottle of Algaecide is 32 ounces of fluid Use 6-11 oz per 10,000 gallons to kill algae, and 2 oz per 10,000 gallons for regular weekly maintenance doses