Just wondering here...I put a ground probe in one of my tanks and hooked it up to a GFCI outlet. I was feeling some shocks when I touched the water. I narrowed the problem down to the lighting. Anyway, the GFCI never tripped. I thought aside from supposedly ridding the tank of stray voltage, that it would also trip the GFCI when the water is touched. I guess not? What's the deal?