Great, it has very little nutes, doesnt matter n this case because you buy a new bag for each grow so it is not just a grow medium, its a nutrient expense, if its reused its just a grow medium, if u buy a new bag its part of ur nute regimine. I have nothing bad to say about Jacks, its great in ammended soil, my veggies love the shit. Jacks isnt complete, AN costs more, they both work, n they can both be replaced for pennies on the dollar. Those are the facts. I use Jacks, AN, GH and several others but do it because its convenient and for the simple fact that even if I ran AN at full strength n used the entire line up, it would still only cost a few bucks in nutes to grow a pound of bud.