Good read!Andre Mueller did a write up a while back based on a study of the bacterial fauna found in the corals "slime" and its association with RTN/STN.
As well as the use of witch hazel to combat it
Here is the study he linked to
[PDF] Community analysis of coral mucus-associated bacteria and impact of temperature and CO | Semantic Scholar
The coral holobiont is a complex assemblage of the coral animal and microbial organism and bacterial isolates identified are phylogenetically 96% similar to Enterobacteriophage reference strain, which are potential bacteriophages for the inhibition of marine pathogens. The coral holobiont is a...www.semanticscholar.org
