scoot555answered grow question 13 days ago You are in flower and at this point you really shouldn't have to be adding Cal/Mag. However, that is calcium deficiency which can be caused by low PH, or lack of calcium in your grow media. You have been feeding cal/mag, so I'd assume low PH.
In soil, calcium is best absorbed by the roots in the 6.2 β 7.0 pH range (in soil, itβs generally recommended to keep the pH between 6.0 β 7.0, but calcium specifically tends to be best absorbed above 6.2)
In coco or hydro, calcium is best absorbed by the roots in the 6.2 β 6.5 pH range (in coco/hydro, itβs generally recommended to keep the pH between 5.5 β 6.5, but calcium specifically tends to be best absorbed above 6.2)
Flush with proper PH and PPM H20. In flower you should be trending to a higher PH than in Veg.