I have a hardened H. minor, that grows happily outside of a terrarium and without any special humidity or temperature control. I have been growing it on a windowsill and last time I repotted I took a division off it and put it under one of my lamps, on my open grow shelf.
Here's a comparison:
Windowsill grown
Grown under lamp
Here's a comparison:
Windowsill grown
Grown under lamp