Hi
@SkinnyJoe! As soon as your seedling has sprouted, it needs a decent airflow. However, at such young age, you don't want a fan directly blowing on your baby, but you need air to circulate around the plant. Just don't put the fan right in front of the plant, make sure the seedling is slowly moving but not shaking (slight breeze, no big wind) and you will be fine. Happy growing! 👊