Hi my pond is about 25yrs old and gets oak leaves in it in the fall. I try to rake them out around the bank to help in filamentous algae growth. I have always run a fountain and a dock deicer, fountain 24/7 and deicer 12/7. Pond is 80yds across and 15 foot deep. This is the first year I have run an aeration setup and algae is better but duckweed is out of control. The aeration I installed is a Gast pump like 4-5 cfm and ending with twin about 10 inch in diameter diffusers. Diffusers are suspended 10ft down in 15ft of water in center of pond. I have been netting duckweed seems like every other day and water clarity is foot and a half. I finally have had it and sprayed some herbicide for duckweed 1/4 around pond 8ft out. Whole pond is covered and it is a task to keep areas of surface open. I have not put in any pond dye because I do not want to add too many variables. I have been running aeration for a month first 2 weeks at 4 hours in morning and last 2 weeks 8 hrs during day. Finally getting to my question is my new aeration setup causing me more trouble than it's worth? W ish I could eat duckweed. Thanks and stay healthy
