Switch to 12/12 at th start of the week. Small signs of flowering and bushing/stretching up nicely. Maybe some nute deficiencies as some of the leaves edges have been burnt.
Only week 6 of flower and leaves have gone droopy and yellowed. I’m using only bloom and bud candy advanced nutrients. Also, had a bit of a gnat issue but nothing too serious. Should I be adding more nitrogen to my coco?
Yellowing lower leaves in flower, usually happen while in the stretch phase, when the plant needs massive amounts of growth nutes. That's the most intensive growth phase.