I would run a sheet of black/blue plastic mat board behind the glass at the rear, this will help hide all of your hang-on equipment and it will also give the back area of the reef a dark area where fish can retreat to.
Also I noticed that your skimmer is pulling out almost clear liquid, if you do a search on here or RC you can find an easy mod for it, which allows it to be turned up full blast and yet have a longer throat so your not over skimming and the skimate is nice and green. I did this simple mod to my Prizm over a year ago and it performs much better. Without this mod I had to run the skimmer at 50% flow because if I turned it up any higher the cup would just fill up with water.
Looks good
