Cotyledons curling

Klum

Member
Hi,I have 2 critical orange punch in solo cups filled with coco/perlite which are only days old and the cotyledons seem to be curling up. They are under a viparspectra par1200 and the rh in the tent is roughly 50% so I have added clear plastic cups on top of the solo to keep them humid. Temps are around 82 when lights are on and 74 with lights off. What is the cause of the leaves curling up and how do I fix this? Thanks
 

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