Quick update: The 24 gallon biocube is growing sps with this setup. He has the whites on about 70% and the blues on about 90%. Easy to keep sps, but they're happy. Purple haze,pocillipora,blue stag,pink birdsnest,pink lemonade. Other corals doing well in there are zoas and a neon green candy cane. He doesn't have a skimmer, only one small fish and does weekly 5g water changes.
In my 135g, the corals have really colored up since the LED upgrade, although the success might be from actually keeping my numbers right with the doser from Chuck (Binford).
I'll have pics soon. The biocube is coming to my house in May for the summer.