Quote:
Originally Posted by zipcode
I find alternating the heat with turning it off seems to help, but I didn't do a controlled experiment.
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No controlled experiment here either, but I've been doing that for a few years now. My heat mat runs too hot, and though I can use blocks of wood to raise up the trays higher, I found that I have better germination when I turn off the heater at night. That seems to mimic the day/night heating cycle in nature. And I have fewer of those overly long thin sprouts that hatch and grow fast in the dark looking for light.