It appears as some are confused by varied answers to the question what is the best soil/amendment combo. To clear much of this, there are two schools of thought. Hi Brix, and nonBrix organic gardening. Most don't use the Hi Brix method, however I believe this is a better quality finished product. Advice from Hi Brix growers concerns the potassium added to the soil, as potassium interferes with plants producing sugars and carbs. Potassium is needed to produce fruits (apples, tomatoes, pumpkins, etc.) As cannabis only does flowers, not so much is needed. As non Hi Brix growers aren't concerned about potassium levels, most try different things from different formulas and settle with whatever gives them the best they can, and stay with it, as long as it's "organic".