The short answer is: growing in the basement.
A more elaborate answer can be found in this thread: http://www.rv-orchidworks.com/orchid...ooks-like.html
Basically, I try to reduce the amount of heat that comes off my lights into the terrarium, I keep the plants well watered, the terrarium has good air movement, and I use a fogger. Where I am using pots, I use clay. Between these, it stays pretty nice. Masd. nidifica isn't too picky about temps - it doesn't like to dry out, though!