Gti_Leo said:remember people put water beds on their second floors. water beds prob hold about 200 gallons of water weighing in at around 2000 pounds
A water bed has a much larger footprint than a tank does, spreading the weight over a much larger area and more beams. This creates less stress on the beams that support it. I agree that the tank will be fine on the 2nd floor, but the water bed comparison is a common misunderstanding.