>> OK, three questions. Where is a good, INEXPENSIVE source for obtaining >> what is necessary for heat underneath the seedlings? >> (I've heard that placing the seed tray on top of the refrigerator is >> enough heat to start tomatoes, but I haven't tried it.) For certain seeds, I use an old waterbed heater. I have collected a number of these at garage sales. They're flat, use little energy, and an entire flat fits on one. DRK