The tank is a 40 stretch hex, I have a 250watt HQI MH pendant phoenix 14K bulb, less than a month old, before that I was using a hamilton 14K bulb. My filtration is a HOB aquafuge with plenty of chaeto and live rock and a tunze DOC nano skimmer. I check my parameters weekly and everything is OK. When I moved everything into the new tank they were coming from a 58gal with a 250MH SE 10K bulb, this is the only coral that seems to have a problem with the move everything else is looking very good.