Originally Posted By: snrub
But what if a person only ran the deep diffuser enough to transfer only a portion of the water at a time, but not enough so it would cool off too much and the Earth would again have time to keep it warm enough.

A possibility? Would this be helpful?


I've run our station of (3) 9" EDI bottom diffusers on a timer the past two winters in liue of messing with pulling it shallower and it seems to be working just fine. Currently I have it setup to run 20 min @3:30 am and another 20 min at 3:00pm. It's kept a hole 15-20 yds across or better for the majority of winter on our 2acre pond.