same thing happened to me, but at 7.30 in the evening!! to be fair it was a second hand tank. i still prefere the Juwel 180 tank for design and look, to the Clearseal tank that replaced it. glad to see your thinking of junking the Juwel filter for a cannister.I always stick to Fluval tanks now, had a bad experience with a jewel tank a few years back with it splitting at 5 in the morning and pissing water all over the floor and me having to do a quick rescue mission, I also prefer the look of the more chunkier Fluval tank.