Problems

I’m starting week 5. they are in foxfarm soil, ph is in the proper range. they get cal-mag every watering what could be my problem? First timer any advice is appreciated thanks it’s also widow 🦨 photo with ES300 rh 40-50% temp 78-85 degrees I’m also using jobes organic fertilizer 2-7-4 1-1/2 teaspoons per 4” of pot diameter