I am still trying to get this deficiency lined out. It has to be having some kind of negative effect other than light leaves. I'm currently running the cal-mag-iron supplement at 1ml/L but may increase it to the max recommendation if I don't see more change soon.
I will be following the biobizz nutrients and their recommended feeding chart for this grow. Earth juice natural ph up/down for the water ph. Coco loco will be my growing medium.
@Azertyuiop,thank you!! On this particular plant I didn't defoliate much until after she started flowering (this would be recommended for a new grower). She was really spindly and open and didn't need it. Good luck!