@BarnaGrower, to maximize your yield I would definitely LST those babies and if they are photos FIM or Topping them as well. It has made all of the difference in my grows💪
Keep up the hard work! For soil, Generally we want to aim for 6.1 for PH. Also your PPM seem a little too high for the stage of development you are at. The symptoms are slowly beginning to manifest themselves in the leafs. If you need or want any help always feel free to DM me friend. We also have a tutorial series here on grow diaries & on youtube. It is very detailed and in-depth. I am following along!