That really sucks. I was doing some reading on it to learn up just in case and it sounds like a real nightmare. I’m sorry you had to deal with that. I love my euphyllia and really don’t want to deal with that kind of devastation.After a while just gave up and rode the ride. They all died eventually and haven't have the courage to get another since. Unique Corals has some nice big colonies for sale though and am considering taking the risk. From what I understand its most likely Vibrio bacteria devouring compromised tissue after some sort of trauma or insult. No way to prevent, or even slow down progression that I have come across in the forums.