Leaf Curl

Hi all,
I'm a newbie to hydro, been working on it for 6 months now. I'm having an issue with one of my plants and leaf curl that I can't figure out.

Super Lemon Haze
UC DWC
ph 5.8
EC 1.5 (rock nutrients) week three of flower
Great White bennies
water temp 67deg
55% humidity
82 degrees
flower
CO2 @ 1400ppm
(2) 1000w HID's
water change every 10 days

A little history, this is my second grow and this happened to my last crop as well. But, this time it's not as bad and has not affected all the plants, yet. I've done a lot of reading and it seems that this is an overfeeding issue. But, my EC isn't too high for week three. Someone also mentioned that too much CO2 might be the issue which I was having problems with on my last grow. My controller was f'd up and the ppms were around 2-3k most of the time. This grow I have the CO2 dialed in where I want it...1400 day and 450 at night. I have sealed room and wonder if the plants need more fresh air or something.

Any help from someone that's overcome the same issue would be greatly appreciated.

Look thin and stretchy I'm a dirt grower maybe a better pic may help?

N tox

Could've been heat stress which caused perspiration which made the plant uptake to much nutes especially N flush it and call it a day

DannyBlaze2 said:

Look thin and stretchy I'm a dirt grower maybe a better pic may help?

Click to expand...

They are tall and stretchy. Here's a photo of the whole plant. It's about 7' tall at week 3