I've been doing a lot of the reading here as well as other places. As I said, I'm becoming familiar with lighting as well as soils. I guess my next couple of questions here are:......what is the main difference in "high" between male and female, I've seen ads for a hydroponic light system that's self contained and for sale. The ads usually show roses or something like pot. Does anyone know anything about this?, and are there any books that anyone knows of that speak specifically about growing pot....not that it's legal or anything