I think you are correct.
It was on the piece of rubble, but then I glued the rubble very large piece of rock.
It transferred to the piece of rock in less then a day......
The rubble and Anthelia are out, and the Majano "removed", but the large rock was left in the tank the entire time.
I'll let you know in a couple weeks if pieces of the Majano that got away reestablished anywhere.
Maybe now I'll start using a quarantine tank.......
I'm sorry that happened. How did you "remove" it? We recently broke down Greg Swiechs tank after he had major majano infestation from the same source as yours. In my experiences I haven't had them spread as fast as aptasia.
Scraped it off, scooped out all the big pieces, little ones got away.
As soon as the first piece came off I knew I chosen the wrong path, the piece of rock it was one was a giant 25 lb'er.
I should have at least started a suction tube into a bucket to suck and dump.