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Old February 23, 2018   #9
TC_Manhattan
Tomatovillian™
 
Join Date: Apr 2015
Location: Ohio
Posts: 457
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Here is a link to the one I bought last year.
It's $12.98 on Amazon, free two day shipping if you have PRIME.

Doesn't have a thermostat, but I used it without any problems overheating, just watched as the soil or growing medium dries out quicker.

I placed my seed tray with the starter cups directly on it, and an overhead T-5 light above. It really worked a trick to get them to sprout quickly.

https://www.amazon.com/certified-See...=seed+heat+mat
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