Help with Diagnosis

[TheDrIsIn]

Hi all,

Would like your feedback regarding diagnosing this little girl.Any feedback is much appreciated.

Background:
Autoflower (afghan kush) in DWC hydroponic.
~33 days of life
- ph checked and stable at around 5.9
- Advanced Nutrients (Micro-Grow-Bloom) only
- total ppm 800 (tap water base 150ppm)
- LED light
- Temp 70F light-on; 50’s light off
- water temp in reservoir stable at 68F
- 2 constant stone pumping oxygen
- clearRes as needed on every water change
- water being changed max every 10 days

Symptoms:
- Started noticing after 2 weeks of life that the lower leaves exposed to light prese ted some sort of deficiency
- Now I have noticed one of the upper leave has started to be affected by something else as well.

please see pictures below and help me identify the issue.

sta

 

[TheDrIsIn]

Any expert left on this forum?

 

[Concordia113]

Would be better without blurple light but looks like leaf mold I get in clones sometimes. But the some pics make it look like cal/mag def. looks like your Bottom leaves are touching the bucket I’m never a fan of that whether it soil or hydro that’s what makes me think leaf mold. I’d trim affected areas add cal/mag check rh keep leaves off bucket lids. Humidity always higher closer u get to that water source. Cheers and I am no expert

 

[TheDrIsIn]

Thank You so much for your feedback. There is no mold it’s just the light effect and the humidity has been pretty low (30’s), though I am going to cut the affected areas sine they won’t recover anyway like you suggested.

CalMag deficiency, that’s what I thought as well as I am not using anything specifically for that and my tap water might be low in those elements. Measured again and it was 120ppm.
Cheers!

 

[Concordia113]

Yellowish def makes it more cal/mag issue now that I look again. This is what I use sparingly and haven’t had any deficiency signs. Don’t even use it every change does the trick. Cheers current diesel to prove it

 

[TheDrIsIn]

Wow what a beauty! I’ll give it at try hopefully it will do the trick. Cheers!