Soil is about balance. I see low Ca, but that could be cause of low B or other cations competing for base saturation space. Have you seen a perfect grow? I have not. Been doing this for a very long time, but people are getting closer. First step IMO, know what is in your soil. I can tell you 100%, Ca is low on EVERY BAGGED SOIL in America. I have tested many myself, and I am part of a team of agronomist that are testing hundreds of samples. Ca is a major problem, followed by low minerals or unbalanced minerals.
I would say throw some Ca on the soil and see what happens, but without soil tests I would be shooting in the dark. All I see is low Zn, low Ca, and possibly low P. Good luck on the grow, but lets start testing soil. That is the next step, imo.
Edit: btw, crazy how your grow has stretched on the right, but compact on the left. Same strain or due to the different bulbs?