Try 2 get a ppm or ec meter. Will help u know the nutrient levels and helps fine tuning. I am using Fox Farms schedule without the big bloom in my aero unit. Can pretty well go by the schedule until you r confident enough to push the girls. Clone 450 ppm, Veg 850, Early flower 900, and Late flower 1250 ppm is safe for me. Don't forget to keep your ph stable. I shoot for 6.0 in hydro.