How far apart should the bottles be spaced

[shucks]

I hope to legally grow pot for medicinal purposes. I plan to use the 2-liter system. My questions: How far apart should the 2-liter bottles be spaced, center to center, to grow pot to full term.

Second, which hydroponic fertilizing solutions would you recommend for the growth stage and the budding stage?

Ron, I've studied hydroponics in books and on the Net for many months. No other person has more solid knowledge on hydroponics than you do. Thank you so very, very much for the incredible work you're doing to help people like me throughout the world. You're truly one helluva human being!