"John M. Darnielle" wrote in message ...
I've noticed that the aluminum base to my 1250 watt "Ice Chaser" by Farm
Innovators (which is identical to the Beckett "pond De-icer") is corroding.
I do maintain .06 percent salt level, my compromise on the "How much salt"
debate. This probably causes the corrosion. My question is- is this bad for
the fish? Thanks in advance for your reply.

Are you talking about corrosion or mineral build up? My stock tank
deicer has a build up of minerals on the element. At the end of the
year I scrape it off with a knife and it is still working after a
year. Happy water gardening.