The over flow box is 6"w 6'H and 2"D, and I have the U shaped siphon tube going over to the back of over flow unit... It seems that the siphon tube lost its prime, and no water was returned to the sump. Water from the sump then over filled the aquarium. I know, I had too much water in sump, but its only ten gallons, and there is not much room in it anyway. So to do this myself, I can just buy a new tank, have it drilled, and install a real over flow? I see how this will work, but what about my stand? Do I drill a hole through the stand for plumbing?