Why is this coral dying?

[Myka]

Another thought...it's a year old?? How big was it when you got it? Mine in 8 months went from 12 heads to 37 heads, and I just have T5 lighting and no fancy setup just a lil 33 gallon tank, and I rarely check parameters...lol. The lack of growth makes me wonder just how (un)well it may have actually been doing...?