I put seedlings under 18/6 as I do for all vegging.
As soon as they sprout I apply light, usually just a cfl or two until they are up a few nodes or so.
I taproot them in a coffee filter then plant them in a cup of potting soil and leave it in the veg tent about 10”-12” from the t-5 flourescents on 18/6 with the older veg.
I move them up gradually as they stretch for light.