10 plus years of growing in coco in 25 plus light shows and never an issue giving water in coco in between several feedings. This is called real world experience. I’m sure others have many more years experience tho.
25 grows is certainly enough to of formed an opinion of your own. That is all it is though. A short history of what worked for you. It's no reason to say other things are categorically wrong. Your man enough to of stayed around though, and I respect that your not sticking your head in the sand somewhere right now. I can't see a diary post or any pics in your current album. If your over 1g per kwh then that is interesting. In any case, try to fertigate every time, with a target run-off seen as acceptable. You should do better.