Side bracing in the aquarium will not permit the overflow on the side....come on people, I'm not asking for commentary on the "why" or "how"......What have you done, that was less than orthodox, in the name of fishkeeping that is funny, impressive, clever...what ever? I know, I know, I should have moved the aquarium....but I couldn't, not even an inch...seriously. I am putting a sump for this aquarium because of the simple fact that there will only be one pump and one heater. Right now there is an Eheim 2250, 2026, two power heads, two heaters, two air pumps, a UV sterilizer and way to much clutter, all in the name of fishkeeping.