Pond Boss Forums AERATION Systems questions Winter survival DO vs Hydrogen Sulfide, etc

Thanks for the input fellas!

The fact that the actual air that is being pumped and making the plume adds almost no O2 to the water is repeated over and over again on the forum. At one point I had been ASSuming that without a hole in the ice I might as well turn the aeration off, but then fish survived. I had not really considered the fact that the plume would add an increasing percentage of its O2 into the water as the water temps dropped.

I knew the aeration was helping because fish were surviving, just not sure in what exact way.