Ok I had a koralia fall off the glass when I was not home and the Mrs. Unplugged it and moved it off the torch. It apparently took 2 tries to find the right plug because when she plugged the other koralia back in it ran in reverse. My yellow tang, of course, is an idiot and got stuck on it. He is ok as I turned off the koralia but you just haven't lived until you see a 3" yellow tang stuck to a power head. It was pretty funny (but not at the time)