Slight nutrient burn on the plant that's a few days younger so no food for that one this week, but it seems to be recovering quickly. Pre flowering has begun this week.
I'm also rushing to catch up with LST because by week 3 the plants were so short and stocky with extra thick stems that I decided to leave off LST until the plants gained some height. This was a mistake as the stems became even thicker! I bent them slowly over a few days and will complete LST next week with lesson learned, LST is better done sooner rather than later!