So I didn't think I had any issue with putting my 75gallon on our 2nd floor in our townhouse, but I am suddenly starting to wonder. Was playing with my kids in teh same room the tank is and if there was excessive jumping near the tank the water could be seen bouncing/moving around. For those who have tanks on 2nd floors, is this normal or should I be looking for a new place to keep the tank? The tank is placed next to an outside wall and a wall splitting our house from another house so they should both be load bearing walls, I thought. The tanks been in place for about 2 months.