In winter I changed in my orchiterrarium bark and coal substrate by EpiWeb and watering of misting system through spray nozzles was not enough. Always stay some dry places, and I watering them manually.
Some photos of moist and dry places after usual watering of misting system
Mistking
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Today I decide make additional watering by usual aquarium pump EHEIM compact 1000, and water container under drainage tube. And I made some perforation in tube from pomp.