So I went to add a couple frags today and noticed a tingling on a cut that i have. So clearly i have some stray voltage. I have a grounding probe so i'm not sure how that's possible. Does plugging it into a GFCI adapter negate what the ground plug is doing? also it seemed like when i cut anything electrical on in my sump i still felt the tingling. Two pumps, skimmer, heater. Has all this equipment gone bad? When i cut the pumps and stuff off i still feel this tingling sensation on a cut that makes me jerk my hand out of the water. I have ecotech vortech pumps and those and my light are all that is on, so how is this possible? Is there a way to more accurately test this?