Seems like a strong pathogenic effect is a much bigger driver here than stress. That's why I decided to go pathogen hunting rather than chasing down some hidden water quality boogey man.
I’m with you in thought and experience! Nothing I’ve done in the last 10 years has even put a funny look on the face of my mushrooms, let alone stressed them or kill them.
I can’t think of any other explanation for why no other coral in the tank would be susceptible while the stuff rampages through your mushroom patch, unless we think there’s a possibility that the stuff specifically targets mushrooms.
And if we really think that’s the case (we don’t), save that stuff and send it into production!!! I need some!
Very interesting experiments whatever the case!