The fan sitting at the end of the seeding bench.(Oh...look out the greenhouse window!! That is garlic my friend)
Last year I decided that I didn't need to run my fan. I felt that growing from seed was much easier than I originally thought and I wouldn't bother with it. The difference was shattering. By the time I realized there was a problem, the much thinner stalks were leaning and in some cases bending right over and breaking. It was too late.
The difference is huge. The stalks are thick and strong!!
Suffice it to say, I had the fan sitting at the ready. The day those little seeds broke the surface of the soil....a gently breeze was blowing over them. So is it necessary to have a fan running on your seedlings?? I say yes.