I can fit two flats in my oven. It is electric and I just leave the interior light on and it holds the temperature at 82-85. I sometimes leave the door slightly ajar and it still stays nice and warm. Others that gave me this idea had gas ovens. They just let the pilot light be the heat source for them. After they germinate I just put two more flats in. Caution!!! Let family members know so that they do not pre-heat the oven while the plants are inside. I just take the knob off.
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~ Patti ~
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