I feed very sporadically. My AquaPro feeder really helps when you are trying to conserve feed. whistle I did go through about a half bag of feed this summer. All was hand tossed. The water boils when I throw it. The grandkids love to watch. Last summer the feeder worked 75% of the time. I went through 3 bags of feed. My pond was so low until a few weeks ago, I wasn’t sure feeding with such a reduced amount of water was the right thing to do.

I don’t aerate either. So far my fish seem fine. Only in for three years though.

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