My haze plants always curl...wtf!!!

Has anyone experienced this with their haze plants???

I currently have super lemon haze and wonder haze which is sativa dominant, and OG Kush which is indica dominant...I only have problems with my haze plants, and it seems to always happen a couple weeks into flower.(the claw)The first picture is a couple weeks into flowering and the ones at the top are OG and the bottom are WH.

Im still an amateur, and correct me if im wrong but from my research, i understand that haze plant are more sensitive to nutes, which seem to be quite obvious. I think there getting too much nitrogen. Theres got to be some kind of trick to getting the nutes right so i dont overfeed them, ive tried all kinds of things, mostly playing with the ppm...ive got another batch of SLH in veg and i'll do whatever it take to avoid the curling!!!

Any help would be greatly appreciated, thanks!

Well your correct about the nutrients but there sensitive to ph too. And that's a pain because as they feed they lower the nutrients changing the ph. How to get around the curl. Lower the nutrients or find some with a lot less nitrogen in them. I think if you lower the nutrients and foliar feed a little you'll be able to correct this. I've always ramped my nutrients up in flower this is the best method I have found to find what each plant strain really like. I seem to say this every post but foliar feeding to take some of the stress of the root system. One other thing you could try is lowering the photo period a little more. A couple more hours changing the season the plant thinks it's in. I've done this on a few strains that had a difficult time. Just my opinion. Good luck

(OG Kush is not indica)
not the real stuff at least

Thanx icannabis, I'm In hydro and I do keep my ph at around 5.8-6. What do you mean about lowering photoperiod? Are you saying don't go right from 18/6 to 12/12, or in flower go with like 13 hours of darkness?