I have this image in my head of a triple orange-pink like thing (carnation aka various names such as nepthia, schleronephthia, etc.) in the middle bottom of your tank. They actually look a lot like cauliflower with polyps to me. Not the candy cane and actually not at all like any of the lps corals. I don't recall if it was yours or not now. That could have been someone else's tank. If the carnation is adapted and growing, then its not much of an issue, but, if its not happy or a new arrival, it is an issue. Lots of good carbon and water changes might handle it. You may not have one and if not, then this is just an FYI for someone who might need some insight into it.