Hi all, I need to know what people do to keep the humidity up while useing lighting without haveing to put my plants in a terrarium, or make my room into a greenhouse. I've noticed that some nerserys use a try system but how do they keep the humidity up? I live in San Francisco so it's kinda on the dry side. I've tryed puting the plants outside in the afternoon or late afternoon for about four to five hours of direct sun. And then bring them inside and cover them with a plastic dome. I can't do that with the arttificial lights because the domes are makeshift 2 liter coke bottles they might melt and they might fry my plants. The plants I'm trying them on are a d. capensis (typical), and a d. spatulata does anybody have any ideas about this, thanks......