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Old December 26, 2018   #47
Rajun Gardener
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Join Date: Jan 2014
Location: Tomato Cornhole
Posts: 2,550

Don't over think it, it's used to start seeds not grow plants on that's why it's called a seed starting mat and not a growing mat so just grab a cheap one and go with it. Remove the flats after the seeds pop and you'll never have to worry about burning your plants.

I have the plain Jane he he! iPower Seedling Heat Mat without a t-stat and they have been working as described=10-20° above ambient temperature. They withstood the moisture in the greenhouse for 2 years so for the price I can't complain.

You can also get them from Prime if you have it.
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