The only fish kill I ever had was when I was limiting my aeration time run and was trying running mostly in the daytime with the idea of turning the pond over during the time oxygen was super saturated. I was not home at the time as we were on vacation and only had the information from my grandson who was removing the dead fish. Most the largest fish and mostly CC with some large LMB also. Not many BG.
I had him put the aeration back on 24/7 and had no further problems.
Right now, right or wrong, I am running about 20 hours a day, shutting the air off for a few of the hottest hours of the day on each side of noon in an attempt to not heat the water quite as much.
If I ever get around to putting on the scuba tank and servicing the diffusers I think I might relocate them. When installed I put in the very deepest part of the pond. I think I might move them up a foot or two above the bottom.
Lots of variables in aeration that I sure do not have a handle on. When we have lots of wind i doubt if I even need the aeration. Back when I had some shore line erosion before I put the rock lining along the edge it was surprising seeing the currents that are generated in a pond by wind. I could watch the brown stream of water go out into the green pond water. Put a little pond dye in somewhere and watch it if you don't believe it.
Aeration is as much an art form as a science from my perspective.
Last edited by snrub; 07/06/20 01:01 PM.
