Well, I've been using this for about 10 days now. I'm not onto proclaim something is without an extensive trail. However, I'm already seeing th benefits. Also, I know for a fact that it come with good, strong beneficial microorganisms. I could SEE the mycorrhizae spreading its filaments!, and my blueberry headband has perked up since top dressing her pot.
At this point, I can say, I'm happy with the results i see already.