With an upgrade in lights you need to be careful to shorten your photoperiods so things have a chance to adapt. Or put several sheets of plastic screen material over the top of the tank and over time take a layer of screen off every few days to a week, (depending on how much of an upgrade it is), until you've got them all removed. Othwise you're likely to burn your corals, and possibly have algae/diatom blooms.
B