Im far from an expert on the subject, still very new to all of this myself, but from the reading and researching i have done, it seems many of the good growers are using the cheaper alternatives when it comes to additives wherever they can , i can only assume thats because they serve the same purpose as the expensive shit the companies are selling.
Im talking more in general terms and not specifically about the FF Bembe product, that stuff might be the best thing invented since toilet paper lol
Would love to hear from some of the smarter growers on this topic tho.