I have the same issue,except it's brown/green rhodactis mushrooms.
I must have kalk pasted 50+ only to have them return.
I must have kalk pasted 50+ only to have them return.
pull off the big pieces, then move the xenia rocks to an unlit sump. they'll die.
I used to keep xenia in a refugium, it's an excellent filter feeder.
I would rather not cook my corals but you just gave me an ideaMy tank went up to about 84 this week...lost almost all of my xenia... not sure if you want to cook the rest of your corals... but they definitely did not like the heat...