As of 2013, 24 states and Washington, DC, have either legalized marijuana or decriminalized possession of it. One of my friends lives in a state where medical marijuana is now legal, and he has taken full advantage of this to start growing the plant, which helps him manage the symptoms of a chronic illness, in his basement. Rather than use his real name, I'll just refer to him by his online handle, GrowingGreenLED. I've known GGL for years, and I knew that even when it was illegal, he used marijuana for medical reasons. The whole grow-your-own was a new thing for him -- and me. Curious about the enterprise, I asked if he'd be willing to chat with me about the ins and outs of growing one's own plants. In particular, I was curious about his all-LED setup.