Aquariums and GFCI

[Gizmo]

I'll just quip in with this: while yes the gfi can protect you, it can also be a danger to your inhabitants. By that I mean, say you went on a holiday. And you had all your gear plugged into this trustful device, and pop it has a nuceince trip. Pumps are down heaters are down and your tank is toast. I say run your lighting and non mission critical systems on a gfi but keep at a min one powerhead and a heater off that gfi