I think it depends on the width to glass's thickness ratio. Batfishman's glass seems to be thick enough to withstand the pressure. Meddling with the trim/center braces of a manufactured tank might be putting a timer on the tank itself. Still like Levi said, shoot a PM to Steve. He would be the best person to comment on this.
Here's a link:
http://www.3reef.com/forums/fish-tan...ary-42652.html