VIVOSUN 2-Pack 48" x 20.75" Durable Waterproof Seedling Heat Mat, UL & MET-Certified Warm Hydroponic Heating Pad for Germination, Indoor Gardening, Greenhouse

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.

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

Simply put these worked so well I ordered more. Nice even gentle heat perfect temperature for seed starting. If you start your own seeds indoors get some of these for under your flats. They make a big difference.

I used this to warm my home brew beer. They warm up nicely but take a few minutes to reach full temp and the overall high temp wasn't as hot as I wanted but they work for the money. I use 2 to keep 10 gallons of wort warm in a 45 degree garage. (Inside the jacket in direct contact with my steel fermenter.) But when the temp fell to 35 in the garage these could not keep up and I needed more heat. Overall they work great just remember to account for ambient temp. This pack came with TWO pads in one box and each have a plug. These turn ON when plugged in. No switch. You will need a Temp controller to turn these on and off like an Inkbird.

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!

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.

I got these to put under my african violet cuttings to help them root and grow better.They are much happier now. Heat is consistent and not too hot.

These have been awesome and my seedlings are loving the heat mats. Should have purchased these sooner! Nice even heating.

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

A very good product. I bought it after I had to return another one I bought earlier, which wasn't working properly. Now my plants are doing well and are happy. I'm buying two more because I like it and am happy with how it works.