You know what? I just tried those myself indoors because I don’t live where I can plant outdoors. I just kept a uv light on them, like the rest of my indoor growing veggies.
....but don’t forget the fertilizer.
I have just purchased 2 and am going to give ‘em a try. My neighbor grew some beautiful juicy fat tomatoes and peppers in hers. I was impressed enough to purchase a couple at CVS.