GFCI Issue...

Robink · Sep 18, 2016

I had a gc change the outlet my tank runs on to a gfci outlet. Twice now it has tripped (both times I was right there, luckily) and shut off everything. Has anyone else had this problem??
Any suggestions?
There's no way for anyone to get behind the tank (Red Sea reefer 525) without draining it completely. I did leave about 10 inches or so behind the tank so I can push the reset and get to the outlet.

Brew12 · Sep 18, 2016

It sounds like you have a failing piece of equipment and that the GFCI is working as intended. I would recommend trying to figure out which piece is failing and replace it.

Do you have a ground plug in your system?

Robink · Sep 18, 2016

I don't think so. Unless there's one in the Apex. Everything is hooked up to that except the lights.
I just checked. Yes, both plugs in the outlet are ground plugs.

Brew12 · Sep 18, 2016

You said you were "right there" when the gfci tripped. Were you touching the tank when it tripped?

Robink · Sep 18, 2016

No, across the room. Just heard the gurgling when the return pump shuts off.

Reeferdood · Sep 18, 2016

Do you have a heater plugged in?
I have seen CFCI trip on a sudden load on a few occasions.. Also, if you have a big system load, make sure your circuit is wired properly to handle the current..

Brew12 · Sep 18, 2016

If you had a ground plug installed you should get a trip any time the failing component turns on. Personally, I would get a ground plug and install it. Then I would plug pieces of equipment into an extension cord with a GFCI built in, one at a time, to see which one trips the gfci on the extension cord. Then you will have found your problem.

Robink · Sep 18, 2016

Thank you. I do have a heater in the sump. I'll check everything.

Brew12 · Sep 18, 2016

Robink said:
Thank you. I do have a heater in the sump. I'll check everything.

Just remember, unless you have a ground probe in your tank your testing may be inconclusive. Glass is an excellent insulator so you would need some other path to ground to get the gfci to trip. Salt creep or dripping water can do it but it may be more intermittent.