What deficiency is this?

[jaynewbie]

I have 4 plants in total

Plant 1 having this deficiency

Plant 2 :-

This happened last week and only one leave is like this.

This was recent :-

My setups :-
4x4 growbox ( 90x90x180 cm )
4 inch 190 CFM Duct Inline Fan ( Airflow to outside )
Hipargero 800W LED COBS 3W OSRAM
Fabric Pots Plant on a rectangular tray
KEMING mini dehumidifier
5 inch HF-125S Mix flow Ventillation ( Airflow to inside )
Noise Reducer Muffler
2 x Fan Blower Speed Controller
Charcoal Air Filter



really need some experts advise

 

[Chris Scorpio]

Oh

Expert, then I can't help.....lol

Check the underside of the leaf?
Is fan blowing on it?
What's yer pH?
Nutes yer using?
Tap it RO water?
Any Calmag?

 

[jaynewbie]

Oh

Expert, then I can't help.....lol

Check the underside of the leaf?
Is fan blowing on it?
What's yer pH?
Nutes yer using?
Tap it RO water?
Any Calmag?

Is fan blowing on it?
Yes, two oscillating fan

What's yer pH?
6.0 pH

Nutes yer using?
Floranova Bloom ( 2.5ML ) + CalMag ( 3ML ) per gallon

Tap it RO water?
RO Water

Any Calmag?
Yes

 

[Chris Scorpio]

pH but low...raise to 6.3-6.5

Move the fan so it's not blowing directly on the plants, may be tearing that leaf

 

[jaynewbie]

pH but low...raise to 6.3-6.5

Move the fan so it's not blowing directly on the plants, may be tearing that leaf

It's oscilatting , is that okay?

 

[Chris Scorpio]

Yer call

But I'd keep it off the plants directly

 

[NOOOBIENOT]

what are you growing in , this is a coco forum so i hope its coco , the ph of over 6 sounds high as i have always run 5.8 -5.9 max but maybe i gonna learn some thing here .