Thanks for all the quick responses and information. I'm limited on my vertical space by the height of the ceiling, but the length and width could change. So I guess what I'm trying to say is I'm open to suggestions. As I stated this is my first indoor grow, I'd like to create the most efficient space possible. Crispi, what would you suggest for 4-5 plants, or would 1 or 2 in the 5x5 be just as good as 4-5 plants that weren't as big? Thanks again everybody