just wanted to get some input of how hard you think this is actually going to be. I need to move my 180 over to the left about 1.5 inches. this is an in wall tank with only a few inches of space on each side of the tank. It is sitting on smooth plywood. I am trying to minimize taking livestock out, i know some corals deffiantely need to come out. How much water do you think needs to be drained to get this thing to move with 2 young guys moving it? Probably have a good 200-240lbs of rock in there too..... I know i am out of my mind