Your pond is in much the same condition, temperature wise as mine. This morning my surface temp was 81f. I know the variance from top to bottom is about 5 degrees, so I have backed my start time off 3 hours.
That being said, we have also determined that my system is giving me one complete turnover in 3 hours of runtime. By reducing my runtime to 9 hours I'm still turning the pond over 3 times, but I'm allowing the surface to cool more before I start mixing it up.
If you move the diffusers shallower, and elevate it off the bottom a little, you may be able to create a cooler area in the deepest part of the pond. The fish cant live there, but they can visit it long enough to cool off then move up to better DO and go back when they're ready.
Just a suggestion here, but you may also consider using a little dye. It will assist the deeper levels in staying cooler as well.
Last edited by Mike Whatley; 06/09/19 12:24 PM.
.10 surface acre pond, 10.5 foot deep. SW LA. The epitome of a mutt pond. BG, LMB, GSF, RES, BH, Warmouth, Longear Sunfish, Gambusia,Mud Minnows, Crappie, and now shiners!!...I subscribe!!
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