Chilli seedlings curling

My young chilli seedlings are curling and there are like some dead leaves. I am not sure what is this and what to do. Can anyone help me? Thanks

@Pei_Lin_Shang if you look at the underside of the leaves do you see tiny little bugs? I have often seen spider mite damage on pepper plants that looks similar to your picture.

Hi. I don’t seem to see any bugs. I removed the big ones that are curling.

But the new ones growing up are still curling

Hello !

If not pests then its either water stress , heat stress , or poor nutrient balance/improper PH .

If you are able to carefully divide the seedlings , I would do so . And I would experiment with their placement (part sun and full sun) as well as experiment with the soil. Perhaps adding in perlite or sand to help with drainage if it is a water stress issue.

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Ok. I will try. Thank you.