Well without ripping on the guy, he does state on his site that corals are kept under 20kK bulbs & Actinics, which yes enhances the color out of EVERYTHING, but he doesn't deceive by withholding that information.
As to the photoshopping, having taken a good handful of shots of my own tank, depending upon how much of a shutter pause you get, etc can very easily change the color something looks. But yeah that much blue tends to oversaturate the CCD, so might have some minor photoshopping.