Bests & Worsts Reviews from Amazon

This seed mat works perfectly for my purposes, but it runs warmer than I needed so I had to make some adjustments. My ideal temperature for germinating the seeds on my plug tray is around 80F, but simply resting the plug tray on top of the heat mat ended up heating the germination medium to about 90F! The ambient room temperature was around 68F. To adjust, I placed four bolts on all four corners on my plug tray (raising it about 1/4 inch above the mat) to create a small air-gap. This lowered it to about 85F, so I also placed a towel to distribute the heat differently. In sum, this heat mat works well, perhaps too well, so be sure to regulate the temperature accordingly. Most seeds don't fare well past 85F.