Help leaves wrinkled and curling down

hi need some advice as to why my plant leaves are wrinkled and curling downwards ... I recently transplanted them them from a soil medium to pure coco in a 2gallon pot ... I am using canna coco and coco a & b ... Room temperature is 84f daytime 78nightime humidity is 60% constant... Feeding 500ppm total

Thanks in advanced

Q - Did you keep the root ball intact when transplanting to coco? Disturbance of the root ball will undoubtedly have some repercussions. Be careful of over watering, Coco does have good drainage but you can overdo it quite easily. That is as much info I can come up with, other members help out you know better.