I have been considering switching from Fox Farms to Dyna Gro for quite a while now...... not Peters or Schultz though..... I would NEVER USE AN!!!
you can call their support line and leave a message...... and get no reply...... because they don't want to answer my in depth questions (I have left 12 messages now asking questions on point), nor will they respond to my emails. I have simply told them I will happily switch to their product, and use it on large scale... if they would simply answer in full detail a very specific series of questions..... the only time I have gotten a reply back is when I don't include the questions.... and the reply is that they would be happy to answer any questions I have about USING the product..... they don't seem too eager to answer ANY questions about the products themselves....
Dyna Gro, however was quite the opposite. They were more than happy to explain everything they could to me about the products, including source materials, mixing procedures, sterilizations, concentration fluctuations, storing and shipping practices, alternative product uses, additional products or additives that may or may not be beneficial and in what ways etc. etc. Lol.... we even got into a little lengthy conversation about WHY they use the ratios they do (had to wait for a call back from their bio chem tech though.... and it was worth it) They understood exactly WHY I use BBB along with my FFTB and BB....... she even admitted that in combining the two (FF and BB), I do get an added benefit that their products don't have without purchasing their supplement (pro tekt)..... We even discussed using other media (besides their gro rocks) and agreed that their products would work best with either pure CoCo, or a less N-P-K buffered media like Bio Bizz All Mix (after about 30 minutes they said BBAM would probably be the best thing to use)
I am already very familiar with Fox Farms products, and I think have made it clear that I am not completely satisfied with their products using them by themselves. When Used appropriately though, I would definitely say, that you get More Bang for your BUCK out of FF than AN. And I am about to do a comparison to see about whether or not I will get more Bang for My BUCK out of using Dyna Gro as apposed to FF.