1 Pack 21W Seedling Heat Mat for Seed Starting,10" x 20.75" Waterproof Heating Pad for Indoor Plants Germination(M)

Update: The company contacted me after this review and made things right.I give 4 stars instead of 5 because the person I talked to from this review gave different information than the person who finally responded to my email, and it was frustrating.Original review:I bought this 20x20 mat because I wanted to put two 10x20 seed trays on it side by side. Unfortunately it only heats the center and cools off the further out from the center it gets. Meaning the outer 30-40% of the mat is completely cold, especially in the corners, which kind of defeats the purpose of having a 20x20 seed tray. This is disappointing as the description specifically says "STABLE &UNIFORM HEATING" as a selling feature.Maybe I got a defective unit? I reached out to the seller last week and haven't heard back. I'll give them a few more days to respond but otherwise will have to return it.

This was true to size and easy to use. I liked that it was a subtle heat and I didn’t worry about leaving it on for hours. However, it was relatively thin, so while the perfect size for my counter-top, it required rotating that I didn’t often get to. I’m honestly, I didn’t see a difference between the plants on it and without. This may be a coincidence, however!

This little heat mat works very well! As described. I had one flat of seedlings on there, and within a few hours the temperature rose to approximately 90°. I felt like that was too warm for the little seedlings, so to rectify the situation I put four mason jar rings on the mat and set the seedling tray on top of them. So the tray was approximately 1 inch above the heat mat. By the next morning the temp was staying between 78 and 81. This works perfectly at this temperature.

This heat lamp keeps a few house plants a little warmer on a chilly window ledge. I needed something by narrow and this is perfect. I can feel that the soil is warmer in the pots on the mat than the others around them.

We have had them for a month they work great we have 4 of thrr we m.

I used this pad for after I take the plants out of the green house.

I used this product to start my seedlings did a great job I was very satisfied with it

We ended up buying 3 of these they worked great. Next year we will buy 1 more for our needs. Highly recommend this item.