BN-LINK Durable Seedling Heat Mat for Seed Starting 10" x 20.75", 2 Pack Waterproof Warming Mats Plant Heating Pad for Seed Germination, Indoor Growing, Hydroponic, Greenhouse, ETL Listed

This was so easy to use. The temperature is consistent - it does not have a thermostate but this has made my seedlings are spouting and are much happier! The value was great - I shopped around for other heat mats in our local nursury and they were very (VERY) expensive. This is water proof and the length easily covers two of my trays side by side. It is not too thick, seems to high quality and functions as I need it to. Your sprouts will thank you!

Maintains a good temp to help seed germination. Cost is negligible. Doesn't have a thermostat but I used an instant read baking thermometer to verify heat output. Temps stay within a degree or two. I've noticed a definite improvement in seed germination. I just ordered the same set of two mats for my daughter!

Working great so far! Pretty easy to use, just plug it in. I’ve not had them long enough for growth in my seeds but they feel like a good even temp across the mats. I’ve got these on ventilated plastic shelving

Can only give 4starsat this time because only used them for 3days. But heat is even across bottom of trays and consistent

We bought these for a unique purpose: to put under bedding in chicken nesting boxes. A youtuber recommended something like this to keep eggs from freezing in our northern midwest (WI) region. They work great. Don't really "heat up" the eggs, but definitely keep them above ambient temperature. We have one box that is not near a plug in, so we've not been able to use one of these, and we do have more issues with eggs in that box freezing and cracking. Chickens seem to enjoy the slightly warmed boxes better than the one that is not.

For the price you can’t beat it! I keep these on pretty much 24/7 and have 0 issues! To make it even better my seedlings love the heat mat! These have completely changed how I grow my plants! Mats are made of a quality material and seem like they will last a long time.

Note - I did not use these for seed germination yet. I used one for resin crafting - the other will be used for seed starting when it's not 5000 degrees outside here in Florida. The heat level is consistent, but not variable. There are no switches or knobs to adjust the base setting. It plugs into a standard outlet. The mat itself is a smooth matte vinyl, so I did cover it with parchment paper before I used it for resin in order to avoid making a huge mess. It really helped remove the stubborn bubbles in my resin dice. There is a warning that this, like most electronics, should not be submerged or exposed to standing water for a long period of time. Make sure you are using something with drainage holes OR have your seedlings otherwise contained so the water doesn't get on the mat. Anything that does spill wipes off quickly. This is about the size of a large desk mat and is relatively thin and non-obtrusive. The cord does not have a swivel head, so placement is important if you need things to stay level. It would be a great modification if they made these with a rotating/swivel outlet plug, but alas. The vinyl seems sturdy enough, but I do foresee it cracking down the line. Just be careful and avoid water intrusion.

This review is strictly from a sourdough bulk fermenting perspective. These run hot, esp without having a temp controller on them, but I bought them from the Black Friday sale for a good price. I have a long double thickness towel I put on the table to protect it from the heat, and then I use another towel folded into fourths on top, to moderate the dough temp when letting my sourdough bulk proof, and will occasionally use another double layer on top, making 6 layers so the dough doesn't overheat The two will be good to use when I'm making large batches for my bake days. NOW..... if you're using this for starting seeds, these are going to fry your seedlings in a matter of a short time! These are way too hot to put a seed tray on! Don't do it! OR....buy a temp controller to plug it into, to save your plants!