If the ice is thick enough to walk on and you don't have an aeration system in place and running, shovel off the snow so sunlight can go thru the ice. Or, if you cannot get on the ice to shovel due to safety reasons, can you pump water up on top of the ice to melt some of the snow?

Even an electric dewatering or sump pump hooked to a garden hose. Throw a line across the pond, tie it to the end of the hose and pull it out from shore across the pond as far as you can go or to the middle, whichever comes first. Put the pump where it can suck water but not the bottom muck and start pumping.

What you are describing sounds like similar conditions that resulted in a winterkill last year for a client. (shallow pond, VERY limited sunlight)


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