Pond Boss Forums MANAGING AN EXISTING POND Corrective stocking Southern MB ponds

FWIW, max depth on rocking piston pumps is placing the diffuser at 30' water depth. Other compressors have a shallower max depth.

Winter aeration might all depend on the BOD of the pond during the winter, and while an O2 profile might show there is enough O2 now, adding fish will change that profile.

I know Bill said you may not need it, I think it all depends on the ice. IF the ice forms, then it gets snow on it before you can shovel it off and the ice gets milky white, then that might be enough to limit sunlight penetration through the ice. No sunlight means no phytoplankton making O2 during the winter. 2" snow and 2" cloudy ice is enough to limit sunlight penetration.