It's a JBJ Nano 28 gal w/ quad cf.
It's actually not in a corner but all along the rear of the tank. The front is the cleared area. There are lots of openings where fish can swim through. I have a power head behind the rock blowing at a downward angle. I'm thinking of buying another PH to flow sideways. I don't know what my lighting might support but I'd like an to put a pair of clowns and an Anenome