Ewest – It is a Kasco deicer mounted on a float. The grey box is a timer/temperature controller.
I want to keep an open area on the pond for my pond barge (still to be constructed) and for attracting wild life that will enthusiastically drink from open water rather than eating snow and licking ice during the famous Minnesota winter.
This winter is a test of performance and where to ultimately locate the deicer. The float was the easiest method to keep the deicer relatively mobile for those purposes.
If you want to know more, it is all here:
http://www.de-icer.com/
