Plants are suffering from lack of water and possible nutrient lockout due to an incorrectly calibrated ph meter. Looks like they are going to need a much more acid soil to counteract how alkaline it has become as well as try to add some additional sulfur and microbe food with the molasses. They are being set into flower at the start of this week and I'm planning on a 16 week total grow. So, were halfway there, livin' on a prayer. Also my girlfriend has affectionately named them my "plant-o-looms". Dunno why, just sounded cute and stuck I guess.
@capricious from the way they are yellowing I would say its lacking in iron which can be corrected by spraying with chelated iron
I would reccomend a regular feeding of Calmag as well mate
You are in a early stage of your grow, and its no big damage, It may took not so nice, but its way better than having an excess. Plants come back just continue feeding . Ian around 3 weeks she should look great again