You called your fixture a Photon 60-w. I don't think RB ever sold a 60" Photon fixture, did they? What levels are you running for blue and white? How long during each day are they at the higher settings?
When I had two of the old 32" Photons over my 180g sps & lps reef tank, I did a 5 hour sunrise, 4 hour midday and 6 hour sunset. Midday was 90% blue and 40% white. I'd recommend you start with settings 10 to 20 lower and acclimate the corals unless you've been runing them at high levels before..