I just showed you what's it is. Your ph is off when you feed, and has been for so long you have your root zone ph out of wack. You have buffered your coco to a unusable ph. Stop saying random things and pay attention.
They look warm under that light with all those edges up lol. I still vote ec to high for a plant with no roots. Maybe a shitty meter and bad knowledge of ec and how to feed coco all together.