Hi Donovan,
It really looks quite amazing. A couple of questions for you if I may.
1. How do you like the corals now that they are underwater. Do they look real and do they "sway" at all in the current? I have seen them before out of the water and the colors seem brighter, but in the water they do seem to appear more natural.
2. With the lights you are using, do you get intermittent dark areas or are they bright enough throughout the whole tank? Also, do you find they create a "spotlight" effect on one area of the sand or does it diffuse enough given the depth of the tank.
As a side note, I really like how you have layered the pieces in the tank to give a great sense of depth. It looks great.
Kip