3 Weeks Veg Yellowing and Curling HELP!

Hello all,

Im using a NFT system, ph is between 5.5 - 6.2 The temps are a bit high at 82-86 and low humidity at about 35-40. I am using dutch hrdyo nutes at around 800-900 ppm 1.2-.14 EC My tap water is around 500 ppm 0.8 Ec so thats like 300-400 ppm of nutes if you know what mean. Im using a 600w HPS and its about 20" away from tops.

I am Running them on just PHed tap water for a few days to see if that helps.

They where fine friday and this is what they look like now

Thanks for The help Chappa

I'm a newb, but If I had to guess, I would say nute burn or light burn. If you are not using a cooling tube on that HPS, you could be a little close especially with the low humidity like you have drying out the leaves. Good luck!

honestly id think the culprit was tap water, even though your ph'ing it. starting at 500 ppm is kinda high. try distilled water, its less then a dollar a gallon at any food grocery store.

chlorine and hard minerals arent the best for nutrient takeupt