For ponds: keep pumps and aeration operating during application. Surface debris will turn white when treatment is complete. Remove with a net. If accidently applied to plant leaves, wash off immediately. Add 2 tsp. for each 100 gallons of water, sprinkling evenly around the pond. Wait 24 hours, before repeating treatment.
For waterfalls and fountains: turn off water pump. Powder must come in contact with wet debris to be effective. Wait 15 minutes before turning pump on again. Repeat as needed.
For birdbaths: sprinkle directly into the birdbath water. Wait 15 minutes, then rinse and refill the birdbath.