T5s and bleaching LPS - anyone noticed this?

[Myka]

Originally Posted by sphelps

Corals should be introduced slowly to different light spectrum and intensities. I suspect the lighting change in general is the problem, if you had them acclimated to T5s and then put a new halide right on top of them they probably won't look to hot either.

This isn't the case with my tank. My corals were all used to the 2x39w T5s in a 16" deep tank with T5s about 4" off the water surface, and it was the halides that I slammed onto there. Funny thing is that the halide fixture also included T5s, but now the bulbs were all 8" off the surface. The LPS improved colors quite quickly when the lights were changed. The exact same T5s were used in the new fixture. So the difference was height and halides.