I don't know. I can sure as hell taste and see a difference with organic soil than synthetic hydro. Personally I'm just not a fan of smoking chemicals, even if you do flush well, it's basis of life were manmade chemicals. Every time I go to the dispensary to get my medicine, quite often, I always purchase organically grown medicine. But that's just me and everyone is entitled to their own views and opinions. I'm not one to flat out tell people they are wrong when the proof is in the pudding. But that's just me I guess. Never heard anyone say ever that chemical hydro is better than organic soil in quality and taste. I personally like to supply my patients with the best most natural medicine possible. But as again, that's just me.