Step 1Vigorous, 24-hour aeration is required for the duration of the treatment. Do not shut off pond pumps and aeration devices at night. | Step 2Remove as much algae as possible by hand prior to treating pond. | Step 3DO NOT OVERDOSE. Thoroughly mix into pond water and disperse evenly around the pond. Add 1 teaspoon (5 ml) for each 50 U.S. gallons. | Step 4As algae dies, remove as much of the dying algae as possible. Once algae growth is under control, add one dose per week to control algae growth. |