GrowerOGanswered grow question 17 days ago Hello mate, the leaves seem very cruncy and the burns are sing of Ca problem, to be more precise signs of bad Ca/Mg ratio in your water. When you feed with organic way you must know what is the Ca/Mg ratio in your tap water because if that is out of range 3:1 or 4:1 (Ca:Mg) you will have different problems caused by pH fluctuations showing signs of different problems at the same time, making difficult to recognize the real reason.