This week has seen some serious defoliation of all of the partially dead leaves that have occurred from what we believe was a Nitrogen Lockout. We've now lowered the pH of the new feed and now stopped the Roots and introduced more Cal Mag in order to try and offset the deficiency clearly visible in Paine.
With all three of them having been defoliated and looking much healthier for it, there's nothing now but to carry on and adjust the feed and lights as necessary.