Here are some photos of my basement growing area, mostly inspired by posts on this forum. It has been running since June 2012 and I just now finally feel like I have a handle on how to grow orchids indoors. The dimensions are approximately 10' long, 7' tall and 3.5' deep. Lighting is a 400w ceramic metal halide on a light rail that constantly moves from one side to the other. There are supplemental LEDs on each end, CREE XM-L neutral whites on DIY fixtures from rapidled. I haven't really been happy with the color from the neutral whites, so at some point I will swap a few out for warm whites to see if that helps. Watering used to be done by a sump pump sprinkler system on a timer, but I could never get the water even enough that way. Now I water by hand using a sump pump with a garden hose attached. I have a Mist King setup for the wet growers which runs every day. I use RO water and for 2 years was way under fertilizing.. after seeing widespread deficiencies develop I now fertilize at 150-200 PPM TDS with every watering. I alternate MSU and KLite every two weeks. The left side is bright and dry, the right side is shady and damp. Temperatures are a huge compromise between the warm and cool growers that I have.. so I try to keep things between 60 and 83 degrees.. but I am considering building a cool orchidarium this summer so I don't have to try to keep the temps down so much in this enclosure.. There are about 120/130 species.. mostly purchased back in the early 2000s when I was growing in California.