Do I have stray Voltage?

[PoonTang]

I never have any buzzing when i put my hand in the tank and have never had the GFI trip. I realize that I may be looking down the wrong avenue here in regards to my corals but I am running out of options and want to explore every possibility.
The more i read the more i think that my readings are not high and it is not a leak, just an imparted voltage from the electrical devices. My tank is not showing any of the classic symptoms of a voltage leak.