Still, stale or low air flow orchids

[Mr.Fakename]

Don't quote me on this, but if memory serves me well I've read somewhere that Dendrophylax appreciate stagnant air.

Deciduous Phal also grow nicely with the high RH context of a terrarium.

Earlier this year I used a Phal venosa as a test subject for jar-growing (it's still alive and well), and the use of plant probiotics kept rot and diseases at bay.
In closed conditions, I'd 200% use beneficial microorganisms to keep nasty things under control.


Edit: sentences work better when not forgetting words