Arc fault circuit interupter

[Megalodon]

Hmm, you know, I've never once had a nuisance trip from a GFCI on any of my tanks and I've been using several of them for years, both in the wall outlets, and powerbars. The only times they've gone off is when I've spilled water on the powerbars, and I'm glad they did.

Do AFCIs trip easier than GFCIs? I run LED and fluorescent lighting and have an air conditioner in my house.

[Ace22]

Gfci and arc fault breakers trip for different reasons. To put it in laymans terms a gfci trips when it see some current leakage as when things get wet and a small current follows the moisture. An arc fault breaker trips when it detects an arc from something like a loose connection. Like I said arc fault breakers are designed for bedrooms as that is where most domestic fires occur. The main cause of these fires was the proverbial octopus. This has become more of a problen over the years as people have more and more electrical items in the bedroom.
If you have power bars and electrical equipment located in a spot where you can spill water on it you should certainly have gfci in place. I have no idea if an arc fault breaker will trip in your specific case all I can tell you they are not recommended in places you have arcing loads. Motors often have brushes which produce an arc, aquarium heaters have contacts which produce an arc. If you are truly worried about your house burning down you should have a journeyman electrician inspect your home and equipment. Electrical installations are more forgiving than most people realize they are often afraid because it is all a big mystery for them. I am more afraid of my tank springing a leak than being electrocuted or having a fire personally.