I have a lot of Forest Fire Montis and green Montis...both plating and branched. The rest of my tank is filled with Acros. The Montis have always been the quickest growing with me having to break off branches almost weekly to keep them from overgrowing other coral. For whatever reason, over the last week or so, I am losing flesh on almost all of the branching Montis. The rest of the coral (including the more sensitive Acros) are doing fine. ALK and CA consumption has also slowed way down, indicating the Montis are no longer growing. Neither water parameters nor tank routines have changed at all. Is there anything I am missing besides Monti eating Nudis that affect only that species of coral? I would assume it almost has to be a pest since the more sensitive coral are all doing fine?