Durvet Aquavet 039-00112 Algae Control, Crystal, Blue, 5 lb Case

Use 2.5 to 4 lb granules per acre mixed with 10 to 15 gal of water. Dissolve completely and spray over the top of algae mats. Do not treat more than 1/4 to 1/3 of the surface area of pond at one time to avoid oxygen depletion due to vegetation death. Wait 7 to 10 days between treatments. Re-treatment during season will be needed. Treat algae in early stages. 100% safe for water use immediately.