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HTIM

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Oct 4, 2025

#1

Hi can someone please tell me is this a pH issue or heat stress or something else??

 

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Phyto

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#2

Without knowing more about your grow, at first blush, looks like light/heat stress.

 

GNick55

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#3

why?
could be a few things
temp,humidity?
what’s your growing medium?
size of pots?
watering? how much how often?
check for pests?

 

K

KG1

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#4

Wind spot maybe?

 

m8ty

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#5

Soil looks dry what's the water schedule?

 

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ChupaRain

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#6

I had this happen with too much heat and not enough air movement—trimmed some lower leaves, raised the lights a bit, and added a small fan. Fixed the curl in days.

 

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ChupaRain

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Oct 28, 2025

#7

ChupaRain said:

I had this happen with too much heat and not enough air movement—trimmed some lower leaves, raised the lights a bit, and added a small fan. Fixed the curl in days.

Click to expand...

I had a similar thing happen with leaves curling, and it turned out to be heat stress mixed with overfeeding. Once I backed off the nutes and improved airflow, things bounced back. I’ve been running a few strains from https://2fast4buds.com that seemed more forgiving with temp swings, which helped a ton in my setup. Also, make sure your pH isn’t drifting too much—it can sneak up on you.