Brown Jelly Disease??

[TheSheff]

Ime, bjd causative agent, bacteria x is always present. It needs a sick or injured coral with a depressed immune system to attack.

There's no doubt that this bacteria is wayyyy more present in some systems compared to others though. Where some people might just experience tissue recession or polyp bailout, I have to always be looking for BJD. If I notice a coral looks bad and shows skeleton for whatever reason, I have to watch it very closely.