Hipster - Do you put a heating pad under your direct seeded pots? Any cover or just under the lights?

I actually did direct seeding on the 3 remaining seeds. It's been 4 days (impatience) so I dug them out to examine. One looks to be germinating, so I left her in, but the other 2 didn't look like they were doing anything at all. So I've removed them and put them into baggies with paper towel, on a heating pad in the dark to see if they're still viable. If so, I'll replant them.

Shovelhandle - thanks a bunch. How long after you put the sprouted seeds in dirt until you see green coming up? 2-5 days?