Thanks @arb, of course I'm still learning, I don't have enough pride in my green thumb with cannabis to take offense, thanks for your input. I'll be making a lot of changes on the next grow, but specifically I am gonna try your medium and nutrients in a sample so I can see where things are. I am also seriously considering spending the money to send my well sample to Denver to get a complete analysis. I feel in the dark not knowing whats in my water, Cal or Mag levels is my gut feeling on the culprit.