lack of oxygen. you can easily set up a circuit to turn on a battery air pump automatically when power is lost. just need a relay.<a href=showthread.php?s=&postid=9331430#post9331430 target=_blank>Originally posted</a> by AZDesertRat
I would say no. I had a GFCI trip a few weeks ago for 6.5 hours and lost a Six Line Wrasse and all the other fish were laying on the bottom gasping. My corals are still slowly recovering but it does not appear I lost any.