I'm looking for a sump for my 55 gal, but the dimensions I have to work with are very odd. It needs to be tall, but less than 23". It needs to fit in my stand, which is only 8" wide. Length depends on the dimensions of all the other sides, because the openings are only 11.75" due to a center brace in the door, so I need to actually be able to get it into the stand. Any ideas?