brah, I think nobody is answering your question because the company that makes that stuff is rather low on the nutrient "food chain" of companies. Why not go with GH or AN, their products seem to catch better reviews If you're thinking you wanna do an organic grow, and that's why you are thinking about "Pure Blend"? Brah, once you use metal halide lights, your grow is no longer organic! So keep that in mind if that's the angle you're after?Anyone can comment on the Powerplant Vs. Pureblend pro?