A Wild Canadian Winter.

[kyle911]

i should say too, I put logs around the boat to help with the bubbling. They stuck about 10 inches above the water. At this moment I can't see them at all, the ice took over.

 

[boatpoker]

The water at the surface at my boat is -2C, The water on the bottom is 0C (18' down)
I believe the "bubbler" works by 95% agitation and 5% by warmer water.