Above or In-Ground Swimming Pool Algaecide 60 Plus1 QT Bottles (Various Sizes). 6-11 Ounces Per 10,000 Gallons. To Aviod Foaming, Do Not Exceed Beyond The Recommended Dose.60 Plus Swimming Pool Algaecide is effective in killing green, blue-green, mustard, black, in addition to over 20,000 strains of algae. The product is non-metallic, non-foaming, and it doesn't stain the surface of the pool. It contains polyethylene dichloride, which coats the algae cell and prevents carbon dioxide from getting in. Directions : Use 6-11 oz per 10,000 gallons to kill algae, and 2 oz per 10,000 gallons for regular maintenance doses. Use weekly for efficient results. NOTE: To Aviod Foaming, Do Not Exceed Beyond The Recommended Dose. The item "Above or In-Ground Swimming Pool Algaecide 60 Plus1 QT Bottles (Various Sizes)" is in sale since Thursday, December 27, 2018. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Pools & Spas\Pool Chemicals & Testing\Pool Chemicals & Clarifiers". The seller is "usapoolsuperstore" and is located in Churchville, New York. This item can be shipped to United States.