Be sure to read all the "stickies" in the "Starting From Seed" section of the site. Be careful that your heat mat doesn't cook the seeds. As soon as the seeds sprout, the heat mat will only make them long and leggy. Light before germination isn't needed, but light as soon as the first sprout shows up is needed asap, preferably for about 14 hours/day. Overwatering will cause loads of problems- just wet the medium as directed and with the dome on (and propped open a bit with a pencil or something on a corner of the tray), you shouldn't need to water for days, until after the dome is removed, which happens as soon as the first sprouts show up and the lights go on. The top of the soiless mix needs to dry out to avoid damping off, fungus, etc.
kath
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