Good coloration on that second image
IMO though it looks like the second image was taken at dawn or dusk, because in the first image I can see the back of the tank and in the second it's hardley visable. With just Actinic lighting on, this will definetly help your blue and green corals give off better colors.
IMO I would say that the all the really great reefs tanks that I have seen setup, I would say that there all running either radium bulbs or given serious supplemetation with VHO or other Actinic tubes.
Nice piece Jonathan
cheers, Rich