I always feel a little problem with the notion that chem fertilizers kill off the micolife. Maybe suppresses them somewhat, and over use will most likely deplete the soil life. I don't mix them, because I don't need to, therefore I don't need to spend the money, and my grow style is such that I don't want any suppression of the beneficial soil life, and quite frankly it's the beneficial microbes that I rely on to suppress the pathological ones anyways. The fact is, as anyone who has ever grown DWC, or maintained a nutrient reservoir for any length of time, most conventional nutrients just don't seem to be very toxic. and so I have a real big problem with some of the very tenants that many folks produce as their pro organics arguments. I don't think you have to inflate the benefits of organics, nor do you need to inflate the detriments of conventional methodologies to justify organic growing. It is a grow style that suits some of us very well. I will tell you this though, I thoroughly detest the smug holier than thou attitudes some organic growers take, and I guffaw every time I start to hear someone make what they believe to be a purists' position (there's no such thing unless you are a lawyer). If your goals are to produce a legal product, that will be legally distributed, and is legally marketed as "organic" then a purists' attitude is necessary as there is a legal (state by state anyways) definition of what organic means. However my interests are in no way tied to distribution of a product, and legal definitions of organics is irrelevant to me. So I don't use chemical fertilizers unless I'm toying around with something in coco, you know just for getting rid of the chem stuff I have left from past hydro grows, those plants ultimately getting fed to the rabbits not so much because I have anything against them but rather because I lose interest, and I just don't want to take space under the light from more favored plants. I don't believe it's good practice to try to mix organic and chem based growing very much, I have trouble understanding the point in doing that really, maybe some think it may be a best of both worlds kind of thing, but I really think if you are going to put the effort forward to do organics, then there is great value to sticking to it, as what you are essentially doing is improving your soil over time (that is if you recycle your soil). If you are buying all your "organic" media and fertilizers that are massed produced and sent from all over the world, many of which are from non renewable resources or are heavily mined such that what is taken from the environment is greater than what is being put back in, and you don't recycle soil, my thoughts are that you are growing more to what is a legal definition of organics completely missing the spirit. Not that I think that's a big deal, fuck man, do you, I'll do me, really it is no big deal. The main thing is that you have analyzed what exactly your goals are, and analysing whether or not what you are doing now is best helping you to meet them, and further analyzing how can you do better. I can say, from my experience, that at least one variety that I grew from clones of a wonderful hydro mother, that the organic grown was substantially tastier, smelled much stronger, and I feel like it's effects are stronger. That last statement please regard as being subjective, I've grown much hydro that I couldn't possibly imagine getting any tastier or smellier or stronger, I'm merely relating my experience with my primary variety That I favor.