Terrarium conditions - avoiding mold

[OrchKid]

Thanks everyone for the input! very very helpful.

I'm still concerned about introducing this particular mold into the terrarium, so I'm planning to take the new terrarium route with the Dendrochilum (and I suppose the Dryadella). I'll try a probiotic and see if that makes a difference; and, if the mold gets out of control, there's the springtail option.

Ah, experiments... Brings out the inner Frankenstein.

Now to turn thoughts on the setup into reality.