I started some heirloom tomatoes seeds on April 4. Yesterday (April 7), three seeds had germinated in two seed flats. Today (April 8), seeds are popping up like crazy!!! The Coyne variety is far ahead of the Hannah tomato on germination. Providing the best soil temperature (75° (F)), stimulates germination. Plus, the seedlings are kept one inch from the bulbs in the light fixture.
It never ceases to amaze me, to see seeds pop out of the soil!!