hi your plants look a little stressed imo. are you giving them enough light and water? how's your feeding schedule? how is your ventilation system? is your grow tent very negative in pressure? It looks to me like the plant is struggling to photosynthesize either from a lack of light/air/water, causing the plant to feed on very little nutes. Thus, the build up of nutes overtime cause an imbalance in PH and ppm. Not trying to offend just my 2c.
@newbiedoobie,Hello newbiedoobie, yes you are completely right, it was my first cycle and obviously I did not have certain precautions that experience gives you, unfortunately those plants have gone over from germination, I wanted to use the tabs and unfortunately I could not manage nothing, luckily I have halved the doses from the table, otherwise I would not have even collected.
thank you very much for your interest and for your advice, I still have a lot to learn