The hardscape looks good the plants and growth looks great....If you are going to keep it against the wall like that, I would try to put a black or dark blue backing. I know youwanted an airy feel and taking out the moss wall was na excellent decision IMO, but if you want that abyss feel of openess and a nice contrast to the greens in your tank, a dark background will make it all pop for sure and serve to dull the existence of your equipment. Just a thought.