just picked up a 125g and stand only, there is no center brace on the top, its wide open, but its not broke off, it was designed this way, the top brace just goes around the top, no evidence there was ever a piece going across, 1/2 thick glass, is this going to work, it has water marks at the top so i know it did hold water, filling it up now to check, but without a center brace is this going to be fine since it wasnt designed with one thanks