Calcium and magnesium issues maybe

Hello again. I have had an issue with my soil plants they keep showing signs of (what my research has indicated) of a magnesium or calcium deficiency. I am using sensi grow both parts A and B, and I use voodoo juice everytime. I also have some cal-mag plus I never used because I thought the sensi had everything. Should I be using the cal-mag as well?

I would recommend it. Pictures help.