What's the interior width of the stand? The IM tech specs says 25". Is that exact? I plan to get a 20g high standard tank for my ATO and want to make sure it fits. The 20g high is about 24.5" wide.
There are 27 inches free clearance on the inside of the stand with the exception of where the door latches are (I think this is where IM is getting the 25 inches from). Those could easily be removed or relocated if they happen to be in the way of your ato. You should have no problem fitting the 20g high tank.