Begining of week 6, cal deficiency?

So i have a bubbah kush and a g13xfat purp plant hoth week 6 flower the keave are getting spotty and i notice the nugs are not getting that big they look pretty but under 2 1000 watt hps? Using promix ph water at 6.running whole line if rx green solutions plants always looked great and gree nice and green

Don't take this as gospel but I would give a light feed with some cal mag incase there's to much nitrogen as your leaves are very dark green it could do the job pal