Pleurothallis tripterantha leaves yellowing

[harpspiel]

This has mostly stabilized since I moved it, but it still loses its oldest leaves to slowly spreading brown spots (not sunken though, I don't think it's bacterial brown spot) almost as fast as it grows new ones. I have concluded that it *hates* water on its leaves, more than any other Pleurothallid I grow. Maybe it needs to be even drier.

---------- Post added at 05:40 PM ---------- Previous post was at 05:28 PM ----------

Actually I don't know, maybe it is bacterial brown spot. Just cut off the last 3 leaves that had spots, the large brown/yellow one had fallen off on its own. I'm going to spray the plant down with hydrogen peroxide. Does everyone use straight 3% to spray or dilute it? I sprayed with 3% a while ago, then read some more and panicked and rinsed the nearby moss off with RO water, but it actually didn't kill any moss.