He does nothing to his. This is why I am apt to blame the medium. I am following some advice I read in a post by absolem citing a essay detailing cation and why you would want to charge with different precharged nutes depending on variety and type of plant. In short cal and mg for mj. 100 cal nit and 60 mg. By filling cation sites with those it keeps things in balance where if you used full spectrum nutes it can release n p and k later in veg or flower causing issues and not enough mg initially. That is it in a nutshell from a very long published paper.
I am set on a lack of mg because of improperly buffed coco causing a little deficiency in veg. The raised leaf edges and yellowing or necrosis between green veins is just textbook in my memory for mg def. Also noting mg plays large roll in transportation of water it explains the droopy look of some plants. Just my reasoning and logic. We will see how it plays out though. One of us will figure this out.
