So I have a mixed reef with a sps (acros, monti's, milli's), lps(candy,frogspawn, acan, chalice, acan bowerblonki, favia, gonastria), lots of polyps zoanthids and such and some Xenia I can't seem to eradicate. My problem is for some reason my brain corals(favia, gonastria) deteriorate slowly and...