Light is critical. You can buy adjustable grow lights (like mine from Park Seed) or use fluorescent shop lights on chains– but the key word here is adjustable. The light source needs to be close to seedlings as they grow.
Bottom water with weak fertilizer. Any water-soluble fertilizer will do, just make it light and don’t oversoak your plants (as in forget them overnight).
Now cross your fingers–free tomato plants for friends and family in less than a month, lord willing and the creek don’t rise as my farming forefathers (and mothers) used to say.
What are you growing to share?