Curling leaves!!!!!!!

I have a few plants that are 12 days into flowering...t hey are both curling real bad!!!!..they are curling inwards. I thought I was overwatering them but that wasnt the problem...I let them dry out and it seemed get worse!!!!!....My ph is at like 6.2-6.5...My two plants are deffinately sativas....Can anyone help me?

Without photos or more info on what you got going on it is hard to say. How old are they? Soil, Hydro? Give us something to work with and we will help as much as we can.

Need some pics or a little more info for this one bro

It's hard to even guess without pictures. But with the extremely limited info you've given us, I'd say heat stress. What's the temp? How close are the lights?

are you soil? i hope with that ph. but curling is one of or a combination of several things: heat stress, salt build up, nute overdose ext..... to fix the problem start by flushing with real mild solution (200ppm or so)and then feed half strengthafter that.. But! ! it is real hard to say without pics

Ditto. Pics would be very helpful. There are a lot of things that can cause leaf curling. Based on the info you gave, my first guess was heat stress.