Alien mind reading on 100%Coco grow.

Ok I grow in coco often. I dunno where you got your information on how, but this is how. Coco is a high irrigation inert substrate. Basically hydro in a bag or potter. So it always stays wet. Tons of run off. 5.8 ph in and 5.8 ph out of bottom in run off in vegging. Anything about a 6.2 the roots are locked out in. Dropping coco ph will require lots of water. It is ok you can not over water in coco unless you dump a straight stream in 24/7. It holds air like perlite protecting roots from over water. You also look to be feeding really heavy for a auto AR 2 weeks. They should be literally just getting a taste of nutrition at day 7 to 10. Then slowly increase. My first feed is about 4 drops of each of my 3 part and cal mag at 1 ml to liter the whole grow. If you got a decent cal mag you won't need more. Every feed though. Coco absorbs cal mag. I feed every other morning after I flush coco and get a ph reading. Then adjust if needed. Then I put a gallon on nutrition in. Which I use 3 gallon fabric. In coco they don't need anymore, but roots will fill them nicely. Coco is not soil don't treat it as such. You will encounter major issue, and lose a lot of the grows potential. I feed every other and splash just enough ph water on them to keep them wet between feedings. In heavy bulking in flowering I like to add bloom booster to splash. Hopefully this helps.