Yes, i agree w/ the last 2 posts u need more airflow to ur sprouts. Either cut off the top (unused part) of ur cup, or u can transplant, since u will need to soon anyways. No matter what u do, i would put an oscilating fan on those little guys ASAP. Babies that size will will profit unbelievable from an oscilating fan, u should leave it on them 24/7 for the whole grow IMO.

Bottom line, oscilating fan, GET ONE NOW, and apply.