jagged

I'm growing bag seeds in Miracle Gro under an LED light, I have it under a 16/8 light cycle and only give it rain water. Within the past week and a half it has stretched and the new growth looks undeveloped and jagged. Any diagnosis would be greatly appreciated :high-five:

Hi, I started some clones off a plant that was already budding, and they took, but several of them have leaves that have no jaggedy edges - they have smooth edges. they are only 2 weeks old, but doing well. anyone know anything about this? I dont know the name of the strain tho.