Bleaching corals? Too much light?

[Yinzer]

180 gal. T5 14 39w bulbs. 6 act, 4fiji purple, 2cormax and 2 10k daylight. My sps dieing off, my tan simulates turned bright white (they are on bottom) only 1 type of zoas melting away, I have like 20 different types. I'll post pics in a few minutes. Any ideas? Water quality is fine, salinity was lower than normal though. 1.22