Having seedling issues

These are expensive feminizes seeds and other ones I planted at the same time have 5 sets of nodes already and thes 2 don’t have 3 between them that’s what I was meaning by problem with seeds. Also they was growing so slow I never seen seeds act this way. Also I am new to indoor and have been second guessing myself a lot lately. That’s coco i had just watered them when I took the picture. I planted them in and I had just watered. The picture with the roots showing. Trust me the roots are white and healthy but not filled out the cup yet slow growing so those are the problem I believe I’m having. Maybe it’s to cold ??