one of my favorite corals, my red monti cap from ron(rongleaves), has these white spots on it, is it that RTN stuff or what, never had this problem, I definentally don't want it to die. HELP ME!please
Madison, I suspect Matt may have called it right with some debris causing the spot. I have a large orange monti that has a similar spot, and I'm 99% sure it was due to debris. It has been there for a few weeks with no adverse affect on the coral. As others have suggested, watch for any extension of the spot, but I think you're alright if it is indeed from debris.