That's all really helpful. I was using a nutrient made for tomatoes, I know it's not ideal but I have had stuff that was grown with bud-right and it was just terrible, at the grow shop I was told that the tomato one will not leave any trace in the bud (is he wrong?) I'm sure it probably was...
So a few of my friends plants have got dark brown spots on the leaves. The spots seem to spread and after a few days the leaf goes light yellow, dries out, and falls off. I'm not experienced with plants and from what I have been able to research, I think it's nutrient burn. I just wanted a...