• 5 LB • Treatment for killing floating, submerged and planktonic algae in ponds and lakes. • Use 2.5 to 4 lb granuales per acre mixed with 10 gallons of water. Dissolve completely and sparay over top of algae mats. • Do not treat more than 1/4 to 1/3 of the surface area of a pond at one time to avoid oxygen depletion due to vegetation death • Wait 7 to 10 days between treatments. Retreatment during season will be needed. • Treat algea in early stages. • 100% safe for water use immediately.