As I’m always fermenting homebrew, kombucha, and more, I thougth I would try out a fermentation heat mat from Inkbird. I found that it basically works just as well as my terrarium heat wraps for my carboys, and it was way easier to use and clean up!
The nearly identical heat mat: https://amzn.to/4sek9T8
Here’s one with a built-in thermostat: https://amzn.to/4bRxWKz
This Inkbird temp controller is awesome: https://amzn.to/4c4LtNo