Sphagnum Moss?

[WaterWitchin]

Ummmm, I believe this particular orchid can grow in just about anything, as long as you give it what it needs. They don't really care that much about the medium, be it sphagnum or bark or bamboo or charcoal or LECA or a stick. What matters, if you care about it, is learning its culture.

And in a gentler way... Don't leave it swimming with water below it... with that much moss, regardless of what kind it is, it will leech up thru the moss and keep the roots too wet. Perhaps take the "berry tray" out, water well, then stick back into the glass container with pea/aquarium gravel after it's finished draining.

Edited to add... for what it's worth...