Upper leaves are getting lighter and the tips are burnt | Week 6 flower | Biotabs

You Need to flush noooow

P&K deficiencies.

agreed with Ultraviolet if ur feeding to much Ca it could cause PK deficiency wich is plant showing in the leaves so check ur Ca ppm if its normal then it just PK def

/cal/mag and she will be doin fine!

Dolomite lime is cal and mag, but dolomite lime is unpredictable in that the rate of release is dictated by ph, which unless you control can potentially lead to problems, also adding Epsom Salts which is magnesium sulfate. The cannabis prefers alot more calcium than it does magnesium. Your tips are showing signs of High EC with possible hypoxia (lack of oxygen in rootzones) to boot. Before you do anything you will need to get a ec reading or do a thorough leeching of your medium back to a reasonable ec. Then get your ph back to working range. The line greening hints towards high ph from far too much cations (ca,mg) causing ph to skew along with high ec.