Whats going on?

Not sure whats happening?

Giving some details on medium and nutes, etc. usually helps. But I'll guess she wants calcium.

soil is bcuzz coco/perlite and using advanced nute 3part gmb under cfls i honestly think bud that you are watering them too much and need to back it off a little to me looks like a nute burn problem but it could also be calcium as well easiest way to find out is just not water her for a day or three longer than usual let the soil get pretty dry then give them a half dose and see how they fair but thats just my opinion others may have some diff imput

just watered her like 10 min ago lol, from looking around i thought nute burn as well so i cut it back a bit. The pot gets pretty bone dry before i water but ill try goin another day or 2. thanks man. The bud is getting pretty nice on the upside!

Mid range nute burn ..cut back the nute until you see an improvement, right now flush that bitch fast
to my blog:https://www.rollitup.org/Journal/Entry/flush-baby-flush.27513/

ps see the pale veins in the leave is (Mg) def. add calmag or epsom salts to the last rinse!
1 teaspoon to 3 us gall.

true, bud is looking nice but it wont for long if that def. / nute burn keeps up but yes like vostok said flush her with some good ph'ed water first and back off on the nutes