Ztrawberriez Auto (Grow 7)

I ALWAYS remove the first node, the one closest to the ground as it/they never really do much. You can safely remove them, your plant will not notice it or be harmed in any way by doing so. I take them off as soon as they are big enough to handle, leaving them too long may be more upsetting to the plant than early removal.

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 – 7.0 pH range (in soil, it’s generally recommended to keep the pH between 6.0 – 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 – 6.5 pH range (in coco/hydro, it’s generally recommended to keep the pH between 5.5 – 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.