Mesophyll cell collapse-- what should I do with my collection?

[Lagoon]

Its a hard one to answer!
But for me dealing with this for a few years, I recently decided to flip them into the trash. There's nothing I felt I could do for these phals.

If you want to continue to treat them, then do that, but perhaps in a quarantined area.

Oddy enough I've not seen this in my phal species.

Most of the phals infected were from the BBS. I won't be picking these up anymore.

Good luck to you Cam in which ever way you decide