Vanda possible fungus issue—phyllosticta?

[Rufebuzzy]

Some of my vandas have this reddish pattern on them which seems to spread quickly. On papilionanadas too. Phyllosticata seemed to look most like it, but I’m not sure. Any help would be appreciated. Plants already isolated in greenhouse. Thanks!

[estación seca]

I can't tell from that photo. Go to the Diseases and Pests section of the St Augustine Orchid Society Web site and look at the photos.

[MNA]

It may be, Guignardia or Black Rot
What I will suggest. Spray pesticide.. then next day dip it in mixture of fungicide (manconzeb + carbendazim) and antibiotic (plantomycin). For 15 mints. Then next wk pesticide spray, then after 1 wk fungicide plus antibiotic dipping... do it 3 times atleast.. and see