Here's a 12v de-icing system.

kasco 12v de-icer

Now, this isn't a winter aeration system, but you asked for a de-icer.


www.hoosierpondpros.com


http://www.pondboss.com/subscribe.asp?c=4
3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).