Hey all so few months back I set up a frag tank. It's a 12g aio with 150w pheonix Mh atm the light is hanging 14" above the tank and the tank is 12" deep. Running a hydor slim skim, live rock rubble, a bag of puregen and chemi pure elite. Lately I have noticed all my zoas and lps in the tank are losing the bright colors and getting darker on me. Just wondering if anyone has any thoughts on what could be going on?