well im thinking more along the lines of cal/mag, chelated iron, copper, that kind of stuff.
i was feeding the a/b and the pure identically, and i noticed rust and premature yellowing on the pure long before the a/b. course i didnt have any cal/mag so i just said the hell with it and let them go towards the end. the smoke was still excellent, tho, just not as much yield as could have been.
i was very, very happy with the bud structure/texture after curing. as close to perfect in my book as it gets... still fluffy, but not the type of fluff that compacts when you go to roll one up.
there is also a new product (to me anyways) called liquid sunshine, that is supposed to be like steriods for strains like the pure (strong IBL's with good stable genetics)
supposdly increases the plants flowering energy potential from its natural 30% to 60% or higher.... doesnt mean it will double your yields, dont read the numbers like that... more like 30% heavier, stickier, prettier buds than if you didnt use it.
ps-
see when i ran it, i was thinking it was more sensitive to def's than to over nuting. i burned once or twice, but nothing a quick flush didnt catch with a quickness. now i went out of town for a week and had the gf water them for me, with just straight water because i didnt trust her to mix the nutes right, and that being underfed, did more damage than anything else i could throw at them, and i abused em with MG products lol....