[quote author=ross6200 link=board=ASAP;num=1097024769;start=15#19 date=10/06/04 at 08:56:40]If that's the culprit, I will let you all know. But would copper also kill my inverts?[/quote] Yes. Also, just because you can't feel stray voltage, doesn't mean that it's not there. Is the tank grounded?