i recently had to move to my sis house in plaistow nh. there seems to be a lot of power outages. they happen in the middle of the night and don't last too long. i'm going to be possible setting up a new 90g tank since i couldn't bring my 55 with me. what i'm nervouse about is the possibility of flooding her basement(don't think she would appreciate that) is that what an overflow is designed for. i've never had one. if so are the ones that come in tanks good enough or should i add one to the stand and plumb it into the tank with the sump and fuge. any help would be greatly appreciated. if i can't figure out what to do about the possible floods, i wn't be getting a tank while i stay here.