Using heating pads under seed flats
I have been successful in starting various seeds, in seed flats, using heating pads at 70 degrees and inside a greenhouse. My question: how long should I keep the heating pads on after the seeds germinate? The greenhouse temp, in the winter, will approach 70 in the daytime and never below 45 at night with my heater. I also have clear plastic domes over the seeds. How soon after germination should I remove those?