Aquariums and GFCI

[Delphinus]

I'm not sure I follow you on that last paragraph, sorry. Is that about arc faults still? Or the nuisance tripping? But nothing else in my house is plugged into the circuits I run my tanks off - they are solely for the tanks and associated paraphernalia..

So how come my GFCI tripped on the static discharge when nothing was on? (I touched the reflector which was grounded, there was a zot, and the GFCI tripped.) There wouldn't have been an imbalance between hot and neutral in that case?? Sorry I'm just trying to understand why it happened.

Oh, one more question .. what does "ID" stand for? I know you're referring to the neutral wire in this case but I've never heard it referred to as ID before, just curious what it stands for?