Mike, I appreciate the update.

Today, after the aerator has been off for about a week, and two days of warmer afternoons have melted a band of ice along the north shoreline, I was able to get several fish to come to the surface for Optimal BG pellets.

Some of the riseforms were certainly from RNBT (rainbows). Others, not nearly so splashy, could also be from trout, or from YP (perch). The lighting was so low that I could not identify the fish.

This is the first time in 10 years that I have actually had fish feed while there was ice on part of the pond surface. I'm strongly considering this is a result of aerator been off. The pond water may have stratified a bit. Unfortunately, the ice is weak enough that I don't think it's safe for me to walk out and drill a hole to lower a temp probe into the depths.