Leaves curling and turning black in flower

Hollatchaboy

Well-Known Member

• Aug 22, 2020

• #1

hey all
I'm growing in dwc....ppm 1070...ph 5.7... temp 70... my girls lower leaves are starting to curl and blacken like in the pics... I'm only noticing it underneath the canopy... could it be lack of light or is it possibly something else? Any ideas are greatly appreciated!

 

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Hollatchaboy

Well-Known Member

• Aug 22, 2020

• #2

Hollatchaboy said:

hey all
I'm growing in dwc....ppm 1070...ph 5.7... temp 70... my girls lower leaves are starting to curl and blacken like in the pics... I'm only noticing it underneath the canopy... could it be lack of light or is it possibly something else? Any ideas are greatly appreciated!

Click to expand...

Btw... she starts week 7 of flower tomorrow

 

J

jstavs

Member

• Aug 22, 2020

• #3

The healthy leaves look nutrient burnt have you noticed a slow down in growth? May be nutrient locked you should try keep the ph above 6

 

Hollatchaboy

Well-Known Member

• Aug 22, 2020

• #4

They're a lil burnt... I'm using Lucas formula 8/16... growth seems normal and she's definitely eating...i was led to believe ph should be between 5.5 and 6.5 for dwc... with a slow drift up and 5.8 being the sweet spot. She's doing it to a leaf or two a day. I have some larfy light green growth on the bottom it seems to affect more.

 

Hollatchaboy

Well-Known Member

• Aug 22, 2020

• #5

Pics of Larfy undergrowth...

 

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