I recieved my new lights yesterday, 4 t5ho with moon light, plus the 2 t5 ho i already had,,, its damned bright in there and the moon lights are pretty cool too.
Get a couple actinic bulbs for the 2-t5 unit. The different color bulbs will bring some of the color out on the coral. Run the actinics for an hour or so before the daylights come on and until an hour or so after the daylights go off. It will simulate dusk and dawn.