I just keep them as warm as possible, around 16 c in winter during the night rising to between
20c -32c. I keep the air moving very strongly around them and give them moderate to bright light in summer and as much natural light as I can get in winter. Should add they are grown in a greenhouse and fertilized very sparingly. Large fir bark mixed with perlite,charcoal and a fair amount of hydroleaca make up the compost and I let them dry out completely before re-watering.
Hope this may help someone.

Ed