He he, that looks like a text book example of the worst possible design/shape for a big reef tank. Imagine the lighting needed just to keep shrooms happy anywhere near the bottom.
IMO that thing is frankenstien all the way. My pitty to whoever buys it (or the current owner who will likely be stuck with it for a very long time
Ohhhh you want a frag of the green slimer? Hold on let me throw my wetsuit and scuba tank on and once i'm in the tank hand me those hedge trimmers......