Consider possibly using LEDS. I have a rather ingenious mate who has been spending too much money and time on the net buying thousands if LEDS and testing them all out on various plants. the little lights on ur tv and your key ring torch are LEDS. Enough of the red ones hooked up with some blue ones in there as well using a computer power supply. I'm not an ace at this i have never grown indoors im an outside guy. But i've heard some ace things about them espcecially in terms of cost efficency and space saving. There are some tiny tomatoes on one of his plants at the moment. he is using 1500 leds. 500 are blue. So they must be able to work for weed
Consider it maybe i am