What's the problem with leaves?

Hi there, As I can see in your photos, Your temp and Humidity is not optimal for this stage.It will be better if you can lower your temp around 27C and raise humidity around 60% for vegetative stages.I think these abnormal twisted leaves are caused by low humidity at early stages.Another thing is you are growing in Coco/Perlite mixed and sudden swing of pH or improper substrate pH would also lead to problems.Happy growing... ✌️