Thanks guys!
I grow most my plants in a 6.5' x 6.5' x 6.5' grow tent in the basement. Temperatures in the basement are naturally quite cool (70F summer, 60F winter). I live in AB so the weather is always relatively cool. I use a Hygrotherm that controls temperature by blowing cool air from outside into the grow tent. It also controls humidity and is connected to a humidifier.
During the summer I grow these around 78F day and 55F nights. During the winter its 70F days and 48F nights. Right now temperatures are around 74F days and 50F nights. Humidity ranges from 75% days to 90% nights.
Heres the other Draculas and Masdevallias
D. chimaera from first post.