my first guess is not deficiency (you need way more spacing on those branch) keep you ph at 6.2 and see difference try watering differently a little every 2 days then if they need more give them more on the second feed
Your plants are showing signs of underwatering/overwatering. U need to fix this problem. Sometimes a cannabis potassium deficiency (like all deficiencies) can be triggered by stressful conditions (for example overwatering, heat, transplant, etc) and may clear up on its own after the period of stress is over. If you only see one or two affected leaves near the bottom of the plant, and the problem isn’t spreading, I wouldn’t worry too much about it! When you water next time left pot each day to get a feel for weight and when it's light time to water. I don't check with fingers cuz all the water sits at the bottom. So if you are watering when top layer is dry more than likely your overwatering.
Sorry guy .. the real situation Is ... The pot Is only 2.5 liter ... She have a deficy anche She Is the First in tall end in enter ti Bloom ... Because i dont have fertiliz in the Stretch fase ,... The real situation ... Lst 4 liter stay well After a bomb fertiliz e She Is in full Bloom with a Little deficy of N and K .... Buy After the fertiliz the decolored Is stopped .... And the big grow .... Im Sorry but not answer Is correct .... I know the ledge of watering and the ph .... Because i have Highschool in tecnical agro of all time of coltivazione .. alborea erbacea ortofrutty .... Bye bye
Alienscrog