This is week 7 from seed. The CCKs 1 week ahead of the GSC (feminized). So it's week 6 of veg for the CCK and 5 for the GSC.
I gave them a few days of plain water last week as I noticed the beginning signed of nute burn on the tips. I now feed them the whole nute line, but small doses of each. I was dealing with a small calcium deficiency too.
Also did not give them foliar spray last week.