I was given a 55 gallon tank without a stand, this past Sunday 8/5/07. I set up the tank on a very stable and strong 3 foot long desk, the desk width is wide enough, but the Fish tank is 4 feet long.(ONE FOOT LONGER THAN THE DESK) 6 inches stick out on each end. My question: is there any stress placed on the tank overall since each end ( 6 inches ) just floats in the air?