Sounds too complicated? It's really not. And I can't believe nobody has created and marketed this. Here's the the basic idea...You use a timer to turn lights on and off. You use a thermostat to keep the room the right temp. I use a timer to drip-irrigate my plants. Basically, electronics are doing ALMOST all of the work for us, right? So why not have an automatically adjusting light hood that can sense how tall the plant is, say, every 12 hrs? It could be preset for 18" for example. Twice a day the electric winch (simple gear reduction electric motor, similar to the front end of a cordless drill for example) would raise the hood using an infrared eye...like the thing that goes ding-dong when it senses you entering a 7-11. Is there a need for this product? If you are like me, and your plants are in a detached growing space, you prolly don't want the neighbors wondering why you go into that unoccupied space EVERY day. Comments? Suggestions? Ridicule? All welcome.