2 Pack Durable Waterproof Seedling Heat Mat 10" x 20.75" UL & MET-Certified Warm Hydroponic Heating Pad for Germination, Indoor Gardening, Greenhouse

I am very happy with these heat mats. I am controlling these mats with a Vivosun timer. The combination works flawlessly. The temperature control is acceptable and with the controller, very adjustable. They do not heat quickly. For me, that is ideal. They do not draw a lot of power while warming, and seem to not take much electricity to maintain the temperature once it reaches the setpoint. That is excellent. I have used Vivosun heat mats and timers in the past and expected them to still be high quality. That is exactly what I found. Very easy to use. I have never had any problems with them and they get water all over them almost constantly with timed watering. No issues at all. I keep the timers elevated out of the water spray, so the critical connections always stay dry. I am a fan of Vivosun products and will purchase them in the future.

Third year of use. They are crusted, filthy and still work perfectly. Excellent product. Have sprouted thousands of seeds with two mats. They stay wet all through sprouting process. Perfect temperature. Set them right under sprouting trays.

I love these mats! They're helping my plants so well heat distribution is good.

Seems to work reasonably well. The price is the only major problem. The mats are relatively flimsy, not heavy duty, but that shouldn't prevent it from getting the job done. If I remember, I will return to provide more details after my seeds have sprouted.

I was BLOWN AWAY, yes you heard me right, BLOWN AWAY when I planted some pink zinnias and purple basil TWO DAYS AGO and they sprouted using these mats. I ordered the two pack during Black Friday $17.60 - should have ordered more, if I knew how amazing these were, dang it. Now I have to wait for another sale!! I am using these mats in combination with another Black Friday purchase I've made, the Bstrip DIY Plant Shelf on Amazon ($169), and these two products together has changed my plant-growing and cooking hobbies forever! To sprout my seeds I use tofu containers because they are nice and square and fit on these mats well, and they are cheap because I already have them and when I am done they can go into the recycle for plastic. I drill holes into the bottom, that's the only real work using the tofu containers. I can get 8 tofu containers onto one mat. I use a sterile seed starting formula like Jiffy, wet the soil thoroughly in a bucket, press the soil into the tofu containers to allow excess water to drain out. To plant my seeds, I use a rounded chopstick to poke holes into the soil, and a fine tweezer set such as the 6 pcs Kaverme fine precision tweezer set $6.99 (also purchased on Amazon), then cover the seeds, place the tofu containers into BlueSky Multi-Purpose Food Storage Bags Gallon size $4.96 (Amazon) and use the twist ties to seal. I like this set up because I don't have to worry about water getting onto my floors and the plastic bags serve as mini-greenhouses to speed up germination. I've also started to place my water propagated plants onto the heating mat to speed up root formation as I've seen a lot of gardeners do on social media. I use these heat mats also for my sourdough starter, which has been great because the bottom heat is just right enough to speed up the fermentation without having to use my oven/light. I've tried placing sourdough starter in my garage, but it's still not warm enough, and I live in the tropics!

Great value and work very well

Works very well. No air pockets unlike the other similar product I purchased. Even heat distribution and very stable.

Nice heat pad designed specifically for starting seed growth by keeping rooting area approximately 20-35F above ambient. This is perfect as our garage has a heater that keeps it at 50 degrees F. The instructions and specs are printed on the mat for quick reference and ease of use. It’s the first time using something like this. I had initially over thought it and bought a plug in temperature controller also which is really not needed in most cases. So far all of Vivosun’s have been outstanding right down to the packaging.

Brilliant ideal for my needs worked perfectly

As good as most of them on the market. If. You've never used 14 propagating seedlings You'll be pleasantly pleased by adding a little bit of favorable heat. Makes a huge difference in the total outcome and the quickness of german ration. Annoying that heat is not a factor mine are on aa Inkbird controller. I don't know how the maths work on On their own I presume I presume they have a thermostat in them. This projecular brand I buy other items for them and they Always have great quality.

Heat really well. However its an American plug rated to 120volts, dangerous in Ireland and the UK. Using this at 240volts brings it to 80watts, the matt is rated to 20watts. Good but not suitable in Ireland unfortunately unless you splash out on a transformer per matt.

Attention c'est une prise américaine. Du coup obligé de renvoyer le produit car je suis en France

Might work OK but I wouldn't know. It didn't come with a UK compatible plug. Why advertise it in the UK? Returned.