pictures show browning on leaves of the smallest in the group, any ideas thought calcium deficiency and added a dose of climagic but no improvement. PH in is 6.8, and PH out is 5.6 any suggestions?
Looks like a Cal/Mag deficiency so I think you were right and remember that already damaged leaves will not recover. If the mottling stops spreading then you have successfully tackled the problem. Good luck.