Just wondering if anyone makes a GFIC with a buzzer to warn if it's tripped.

I put a GFIC cord and ground probe on the large tropical tank a few weeks back and tonight it was off. I don't feed the fish, so unless it's something GLARING, the person feeding won't notice. I suspect the cat turned it off, as opposed to a real leak. She's got a thing for lights on power bars. (Yes the cat is still alive and will stay that way).

So any ideas to warn of this situation would be appreciated.

Get one of those cheap little plug-in night lights and plug it into a socket that is fed from the GFCI. It can be under the tank behind the doors. Then if the light is off the GFCI is tripped.

Another option is an emergency flashlight. They're designed to turn on in the event of a loss of electricity. Something like this.

I know some battery backups that people put on PCs (I've used APCs in the past) will give a loud beeping noise when they switch over to battery power . If your cat was the culprit , it'll scare the kitty litter clumps out of him or her at the same time . You would also be able to put your filter on the circuit to keep the biofilter from dying off during an extended power outage .

The drawback to the UPS is where it would lie relative to the GFCI. If it's plugged into the GFCI whatever is plugged in to the UPS doesn't have the protection of the GFCI.

I was wondering about this, what's the logic? I gather it's because the UPS isolates the power line?

I like the flashlight idea BTW.

The purpose of the UPS is to provide power to the equipment when facility power (your electricity) has been lost. The UPS may have its own circuit protection (most do), but it might not be GFCI. So the GFCI trips but you're still at risk for shock.

As a side note...the Leak Frog can help tell you when there is a little too much water under the tank