Plants look great. You can watch them gaining hight day by day. I decided too remove 2 plants, because they grew pathetically.
i think in 4-5 days I change to 12/12 and hope they got enough space left!
I guess roots developed great
bro its very normal to get yellow at the end of flowering the plant is coming to the end of her life its all good soon you will flush and harvest.but you can always try a bit of nitro