Pond Boss Forums AERATION Systems questions 8 acre pond at 10,000' - lots of aeration ?s

I may have misunderstood what you meant at that time, but I've got it now for sure. I had thought we were talking about the snow bridging across the holes. Like maybe two foot of snow on the ice and maybe there was a hole open in the ice, but it couldn't melt through that much snow. I had no clue the air would actually LIFT the ice off of the water. That is just crazy to me, but it is happening.

I literally watched one frozen over hole start to dome up. I watched the hole and studied carefully as the compressor kicked on. For about five minutes I could see the water hitting the ice. It looked like an ink blob moving around under the ice. After about the five minute mark I could only see the water intermittently touching the ice. Then after about ten minutes I never saw the water touch the ice again. I got busy that day and don't know exactly how long it took the diffuser to open the hole, but I know it did finally open at one point. Interestingly, a big crack formed in the ice first and then the hole opened afterwards.

We left the cabin on Sunday and all of the camera pics have showed no holes open since we left. Assuming the holes had already re-domed over. Then this picture came in today which I find VERY interesting. Notice the wet spot is not the traditional circle in the middle of the aeration ring. Instead it is a wet circle on the OUTSIDE of the aeration ring. The ice must be domed over in the middle and the plume is trying to melt the outside of the ring, where the ice is still touching, first!!