Would be interesting to see a comparison since on the surface, both products appear to be highly concentrated in terms of bioactive content and the difference in weight per scoop is only a gram. We know that PF3 consists of at least 75% of bioactives (as stated in the ad copy) and I would think that Bio-Gro is also at similar levels of bioactive concentration going by their label (by their label, it would look like it consists of just the peptides and immune factors, with the only big mystery being the ratios they are in).