Whoa I didn't know having the tank at a slight tilt was bacd for it. What would happen? My water seems to come forward a bit. The tank is in the basement. There is carpet, underlay, then concrete. And it is against a wall, maybe about 3 inches out from the wall. The back of the tank is about 14 inch lower than the front. You can only see the different from the side. Its a 33gal rimless. Should I do something about this? I don't think I can move the tank.