Plant of a friend - deficiency?

[sheria]

Hi

This is a auto plant of my friend. He's growing Hydro. He had last grown weed 2 decades ago, photos.
He sent me some pics and his leaves don't look that healthy to me.
What do you think?

Temperature: 24C, 75,2F
RH: 60%
Medium: hydroponic
Npk 6,7 / 7,0 / 10,5
EC 2,2
Water: rain water, pH ~7
Lights: 70W, custom build, ~4000k
Age:9 weeks
Feeding: liquid
Tent size : 40x40x160 - 1,3x1,3x5,2feet
Strain: RQS Royal Critical Auto
Started: roughly 4 weeks ago, progressed over time. Started from the top

 

[nizmoKush]

Please fill in this form: (copy and paste part is below, this first one tell what specifically to include)

-Problem: (brief description)
-Medium/grow method: soil; soilless-- coco, or peat based like Promix, etc. (please provide the actual product name); DWC, NFT, etc.
-Feed and supplements used: include brand, dosage/strength, frequency of feeding and watering (alone); method-- by hand, drippers, rercirc' or drain-to-waste,... N-P-K #'s too if you can!
-Water source: RO/DI; tap- dechlorinated-?..... EC or TDS reading; pH (don't bother with this on RO/DI, do bother with TDS/EC though to confirm it's working well enough)
-Strain and age
-Climate: night and day ambient T and RH%; res' temperatures; any extremes in T/RH% exposure
- Light used: HID, LED, COB, combo of,... wattage; light cycle hours (20/4, 18/6 , etc.); distance to tops....
-Additional info: How long have the plants been affected?...How fast did symptoms appear?... Anything else you think might be relevant..

 

[Bill.de.Cat]

 

[sheria]

I forgot to copy-paste that part. Ive now added all data he told me. Hope it sufficient.

 

[Cooterjuice]

Ph is high if 7 is the ph in his res. Should be in the 5.8 range

 

[sheria]

Ph is high if 7 is the ph in his res. Should be in the 5.8 range

Nute lockout due to high pH?

 

[Cooterjuice]

Nute lockout due to high pH?

I would think so yes