I'm not very big on hydro-store nutrients. Hell, I'm growing some of my weed in Miracle Grow and can't complain. $400 for nutrients......really? Weed is a plant. It needs basic nutrients to survive. I'm not putting down how you grow, that's not how I operate, but if you someday step back and look at pot as just another plant, you may reconsider looking into non-pot-specific nutrients and see there's viable options out there that don't break the bank.
I use "Jacks Classic" bloom booster. It cost $8 for a six month supply and have had plants with 24" colas and three ounces per plant ever since I started using it. Is it organic.....it's blue powder....so probably not....but have read that it's the "purest nutrients" available. You can get it at just about any nursery.