So I'm still going back and forth between waiting 6/7 months and going big, or going with a nano and getting that started relatively soon. One of the things i'm worried about is the space where I would have the big tank is a kind of cubby that's built into my family room. I've got a small tank there now that I can reach around and over, but with a 48 incher and lights I won't be able to physically get behind the tank or the sump (I'll be cutting a hole in the wall to use the empty cavity beneath the tank) once they're in place and full. I think in an emergency I'd be able to move lighting to check piping or drain the sump... But I imagine that would stink. Anyone have a setup similar or is access to the back pretty important?