I skipped a few replies, but here is my take.
I have and preached use of pure blend pro...If you want to grow organically, but I also preach the use of GH 3-part as the best and easiest nutrient on the market. It gives you maximum control because you vary the strengths of each part to create optimum uptake of nutrients at each stage of the grow process.

And; chem nutes grow bigger, much bigger plants.