Well Ghetto here are my 2 cents from everything you have shared with us. I believe the culprit to a few of your issues stems from your attempt at water recycling for everything in your grow including feeding. Once your water has passed through any form of copper coils, like a chiller, dehuey, ect. then leaching begins and it is a silent and slow killer. Water coming out of a dehuey is practically worthless for what we are doing here and I feel that if you were using a better watering system you would not have had the problems you did. You do great work, there is no denying that. It's the details that get us all like that.