I had a 'different' experience with my tank maintenance last night; So picture me up on the 2-step ladder up to my armpit gettin' after the coralline algae on the very bottom edge of one of the ends, sort of watching TV with a beer on the table. The power went out. Total darkness, like that only found when you're spelunking, and utter silence like in a long snow cave....then the giant sucking sound as the display partially emptied into the sump. And the power did not just jump back on like it usually does. So I'm perched up there balancing on one foot....well crap! So I thought about the bucket at the foot of the ladder with various algae-slop and fragged coral cast offs, and made my plan to get to the floor w/ out hurting myself... and it worked! I dried off & found one of the night-time viewing LED head lamps we keep next to the tank and I had light; found the beer and finished it, I was done cleaning for the evening I figured. Power on in about 15 minutes. It was funny weird!