I bought a flourescent green cap the other day and it already looks like it is bleaching and some of the tissue has sluffed(I'm not sure how to spell this right now)off. All water parameters are at reqiired limits and my calcium is about 450 or so. I have 150 hqi MH lighting w/true actintic pcs. Any ideas what I should do? I'm new to the sps corals.....