Need a picture with just the tank in the frame without the stuff on the sides, it will make the picture come out a lot better. Your camera is using the dark areas on the left and right of the tank to balance out the brightness making the tank look extremely bright in the picture.
Did you end up using optics? I don't see any color banding in the water so I am guessing no but it looks great and just guessing, but I would say you have more than enough light for the corals you want to keep. One tip, if you want a ton of "shimmer" in the tank, point that Koralia on the left side of your tank more towards the surface to get it turbulent, it will make the tank shimmer like crazy. Some people go nuts over shimmer and must have it, others find it annoying, all personal preference.