I think you guys misunderstood me. What I am trying to say is over time more and more and more corals started having this thing. I understand that it needs favorable conditions in the tank to make coral succeptible but some corals get it and some don’t, I am not sure of you got to the point in disease progression where most acropora have it like is happening to me. Almost every coral has it now. I totally agree with the catalyst, it needs something to outcompete healthy bacteria/biome/coral defenses. We can almost conclude this is caused by an organism and not the chemical, this organism needs something in the water or needs corals to be stressed due to chemistry or lighting etc. I highly, very highly doubt that newly introduced frags inherently come with this pathogen in them, I believe it comes from other frags/colonies that are already heavily exhibiting symptoms. This is why I believe it spreads selectively to other vulnerable corals.I would disagree with the spreading theory because myself and a bunch of other guys that I spoke to over years about this all had their corals recover when placing in a separate system. If it spread then the other tanks would become infected. There is a catalyst in system. Heck, some guys even had success by changing lighting. Some led can be focused and irritating.
