I bought a germination tray, heat mat & temp controller. I've kept the dome on from day one (no mold) but 35 of 72 peppers have sprouted. At what point do I replant the ones that are ahead of the ones that have not sprouted? Leaves are starting to show and I want to know when to shift from heat to getting the little guys more light (a light box). Do I just pull the ones that have sprouted and leave the others? Thanks