Just to touch on the original post--there is an awful lot of bad/questionable/disparate information out there. For example, flushing at the end of a grow--some swear by it while others claim you are wasting an opprtunity to bulk up the buds. Defoliating--many swear by this but others, including Jorge Cervantes, advocate leaving them alone, that they act like solar panels in providing energy to the rest of the plant. Sometimes I feel like I am being whipsawed between two poles. Using Miracle Gro is blasphemous for growing cannabis (in some circles) but i currently am growing 4 autos in potting soil--2 are in 100% Fox Farm Ocean Forest, one is 50/50 FF and Miracle Gro, and the fourth is in 100% Miracle Gro (I ran out of FF so had to use MG). I cannot really tell a difference between them, so in this very limited data point, I can conclude that Miracle Gro is no worse than FF for growing cannabis.