As stated in previous blogs, the major problem with LED lighting is that we have too many choices. Because LEDs are manufactured light imitators, we have to choose the correct spectrums that plants want during their grow cycles. One of the best articles I have read is one by Dwayne Kula, one of the principals of Every Watt Matters, and owner of his own web site, MyLedLightingGuide.com. Follow the link to his dissertation. Dwayne is leading Every Watt Matter's charge to get patented processes for grow lighting for many different kinds of plants, including Medical Marijuana. As I said before, Marijuana growing is providing the cash cow for research into Sustainable indoor growing.