Following along. FYI, my pond is 7 yrs old now. One ac, surrounded by trees, so I get the leaves. I run a feeder, but not heavily. I don’t think my pond is as heavily stocked as the OP because I lost a lot when original stocking took place. I’m getting some gunk on the bottom, both from soil coming in, but mostly from leaves. Pond will freeze over, but not for long. (3 to 4 weeks).

So no fish kills yet. OP you may have some time to decide.
I’m too far from the barn for running air or electric. Considering solar for aeration, but haven’t pulled the trigger yet.


9 yr old pond, 1 ac, 15' deep.
RES, YP, GS, FHM (no longer), HBG (going away), SMB, and HSB (only one seen in 5 yrs) Restocked HSB (2020) Have seen one of these.
I think that's about all I should put in my little pond.
Otter attack in 2023