[Gizmo]

Regarding GFI's protecting from fires, there is a simple fix for that. Mount your powerbars and put in drip loops, how many can say that they actually do that? Have splash from your sump around the powerbars? use a acrylic sheet either ontop of the sump, or in front of the MOUNTED powerbars. Obviously if you have an equipment failure (broken heater or a mantis shrimp decided to take a chomp at your favorate powerhead cord) a GFI would be nice. But my experience (8 years in the hobby) says use a grounding probe tied right to a copper water line (please don't use the grounding prong on an outlet, you probably didn't wire your house and you can't be sure if it is a working ground without testing) will save you from those broken device. By all means use a GFI cct on non critical systems, but as i've said, experience has taught me that these things are more of a hinderance than help.