Looks like I need to be in the market for a few of them. I also have tanks all over the house (125, 120, 7.5, and (2)-100 gallon tubs in the living room, 20L QT/frag in the computer room, 20L in the bedroom, and a 10 in the kitchen). I know my windows are not sealed good, too, so I've been blaming it on that. I recaulked a few windows in the process of painting and they quite running water (gotta love newer home craftsmanship-not worth a damn...).