Welcome to Orchidboard!!
You have a nice collection, thanks for sharing photos!
Have you measured the temperature in the terrarium? Temp might not be an issue since you already have a heating mat, and most plants with bottom heat can tolerate lower air temperatures than they would without bottom heat. I'm guessing it's under the bark layer, so I do wonder how much heat is actually transferring to the pots.
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Camille
Completely orchid obsessed and loving every minute of it....
My Orchid Photos
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