Yellow brown leaves on edges and in the center.

[President_Cheeto]

Setup
Light: 600W HID with 600W HPS bulb x1
Grow Space: 8’x4’x6.5’ grow tent
Nutrient: GH Trio w/Cali-magic (also add Hydro-guard)
Medium: Hydroponics, DWC continuous drip system
Humidity: Adjustable Humidifier w/ 2 bowls of water
Air: 6” clip fan x3, In-line fan 400CFM x1
Problem: Leaves turning yellow brown with spots and curling.
Back story: Humidity and Temperature have been a huge issue from one extreme to the next. Had algae growing on the clay pellets and it also appeared in the water level tube covered the pellets and water level tube with foil. I use the nutrient amounts provided in the tutorial. I am halfway through my fifth week. Any advice would be greatly appreciated.

 

[LuckyAcres]

Hey cheeto, not knowing distance to lights, temps and rh my first guess would be light burn. I'd cut those damaged leaves out of there, adjust all parameters as needed and see if it happens again.

 

[LuckyAcres]

Nutes lock down possible?

 

[President_Cheeto]

Hey cheeto, not knowing distance to lights, temps and rh my first guess would be light burn. I'd cut those damaged leaves out of there, adjust all parameters as needed and see if it happens again.

I originally thought it was light burn so moved the lights a few days ago they are about 28" off the top, rh has been low 30's to mid 50's. Temps have been relatively constant at about 72 f. How long would it take to notice improvement? Perhaps I am being paranoid. Thanks for the reply.

 

[President_Cheeto]

Nutes lock down possible?

Nutes lock? Sorry I don't understand what that means. Thanks for the reply.

 

[Green75]

Looks like bad ph...what is your ph...should be at 6

 

[LuckyAcres]

3rd paragraph will explain it better than I can
http://www.growweedeasy.com/7-step-remedy#step3-nutrients-root-ph

 

[President_Cheeto]

No Title

Looks like its in range (5.5-6.5) to me, although I think it is a little greenish, I think I will try to lower it slightly. I appreciate the links, LuckyAcres and thanks Green75.