Big bloom IS organic. SOME of FF line is not, but BB Def is. They also don't bake their soils, so u gain lots of beneficial microbes in their soil.
To correct others... mixing the dry Fox farms ferts w the liquid is NOT the way to do it. Their own feeding charts say to use a lot more than u need, but they don't recommend mixing them. The liquid line is blended to work with each other and balance the correct nutes at the correct time. The dry ones l like chaching, open ses, and beastie blooms are to be used together also... not combined w the liquid. Their Bushdoctor series can be used with either the dry or liquid ones though. Those are more of a supplement line, with flush products, sweeteners, microbe injections, humic acid mixes (w L based amino acids too). That BD series is what u should save up for to get done tuned (imo it's not e even worth it for bag seed, only ordered ones). The only things you NEED to get thru the grow are the 3 dry, or 3 liquid ferts though. And yes, even tho their line up is not FULLY organic... it remains pretty close since it does not kill off beneficial organisms as some non organic sometimes do.
I'd stick w the FF. The Advanced Nutes are overpriced and are not THAT much better marginally.