First Time in Soil, First Diary on The Site

3-24 Moved two of the girls into the newly set up 5x5 under a single Mars-Hydro TS1000 for now. I’m planning on getting one more in the next 2 weeks to start the flowering. That should give the scrog some time to fill in. I’ve been having some issues as you can see in the photos. I diagnosed it at cal-mag, but I am not 100% on that. Some brown spots, some leaf droopage, and some clawing of leaf tips. I read that a cal-mag deficiency is common when watering with RO water, so I top fed 10tbsp cal-mag. Can anyone else help confirm my diagnosis? Thanks in advance