seedling curling under! why?

hi im using the aerogarden on salad greens , 24 hr lights on , GH nuts ph 6.7

other plants are doing ok but this one is curling under hardcore and roots seems to be healthly

Can anyone tell me whats wrong with this little one named curly ...lol

here is a pic

you need to lower the lights

thnx man appreciate the response

Could just be a weak one if the others are doing ok. Maybe add a fan to try and strengthen the stem. Maybe have the fan blowing at the way it is bending to try and straighten it up.
If your really fussed jab a cocktail stick in the sponge and tie the stem to it (loosely).
Make a splint for the limp