Chuck have you checked your larger ponds with a DO meter? I have the same problem as Cecil, we got a foot of snow when there was only an inch of ice on the pond so there was no way to clear it off, and that was two months ago. The ice is very cloudy for the first eight inches. Total ice on my pond is about 14 inches.
I now have over half the pond cleared off and I have been hoping the last few sunny dayd have been helping. My pond is only a year and a half old and no where near full capacity, so I am hoping things are ok. I caught a 7 inch bluegill the other day but fishing was slow. Gonna try again this weekend with real bait (waxworms) and if things dont pick up I will be real worried.