I have a T12 6500K and a T5 Grow 6500K bulb on them, and The nutes Im using a Part A/B then Cal/Mag, I also got some Brassinolide steroid, Im not using all the nutes, Just as needed, I do the PartA/B on every res change, figured they need at least something to eat.
I took off the 600HPS due to...