VIVOSUN 10x 20 75 Seedling Heat Mat and Digital Thermostat Combo Set UL MET-Certified Warm Hydroponic Heating Pad

Bought VIVOSU Heat Mat with external controller & temp probe to use with Ferry Morse seedling tray & seedling containers. Also using blue & red LED hanging light, not shown Added Ferry Morse humidity dome. VIVOSUN mat under tray. Probe from controller inserted into one container at a time. Display can stay on continuously for easily walking into room & immediately seeing soil temp. Display & controls are very visible & easy to operate correctly. Obtaining very good seed growth due, in part, to good warmth contribution from mat. First bought VIVOSUN mat w/o probe. Controller was not controlling heat accurately. For a test, set to 100 deg F on setting display. Actual mat temp display showed 100 degrees but could touch mat & it was only slightly warm. Also, power cord inside mat, on top, on that mat protruded above overall mat height towards center. Required adding cardboard shims on cord side to have level tray with consistent temperature & light. Returned 1st mat and bought Seedling Heat Mat and Thermostat Combo Set. Delighted with performance of Combo Set! Read more

Update to my review—I received the new replacement unit today and the new thermostat is working. Amazon and Vivosun quickly resolved my issue and sent a replacement that took only two days to arrive. Thanks to both Companies for taking care of this! I’ve increased my original 3 star review to 5 stars! Testing it out—you set the thermostat to a temperature, I.e. 74 degrees (Fahrenheit) and insert the temperature probe into the soil or growing medium. If the probe is reading less than the desired temperature it will run the heating pad until the medium is heated to the temperature you want it. My new replacement unit shows all this in degrees Fahrenheit, and let’s you program the temperature in Fahrenheit. The first “defective” one only showed it in degrees Celsius and could only be set to temperatures in Celsius before displaying the Fahrenheit Temperature. The new heating pad, like the previous one works, no issues there. Keep I’m mind though it plugs into the thermostat, the thermostat does not set or regulate the temperature of the heating pad. The heating pad will be warmer than the temperature displayed on the thermostat—as the thermostat is only monitoring the temperature of the soil or growing medium. Once it reaches the set temperature it shuts off power to the heating pad. My older review from earlier this week dealing with the defective thermostat: I am in the process of returning the combination seedling heating pad and thermostat because the thermostat doesn’t work. The unit I received did not supply power to the heating pad. I had set up everything as per the instructions and kept an eye on it, noticing that the “heating” light never came on with the pad plugged in. So I took a non contact thermometer and checked the pad temperature—it was room temp and nothing more, then plugged in an outlet tester (in the photos) to check the thermostat plug in for the heating pad and there was nothing. I’m assuming it’s not wired correctly and contacted Vivosun’s support via email. I emailed them Sunday and have not heard anything back yet, so I decided to exchange the item through Amazon—which had a very easy and efficient way of handling the exchange—they are sending me a new one which I hope works correctly and I have to drop the defective one off at my nearest Kohl’s store customer service department to be sent back to Amazon. I’ll have to update this once I get the replacement unit and can better judge the thermostat. The heating pad works very well and I had to manually regulate the temperature to sprout my seeds. It seems very heavy duty for the wattage it works on and should last a few seasons. I know it’s offered separately from the combination set I had ordered. If it had worked right, the thermostat was easy to set to the temperature on and I like how the probe is designed. The only other complaint I had was that you have to set the temperature in Celsius—but it will display the temperature in Fahrenheit. Some conversion work needs to be done if you want to set it at 80 degrees F for tomatoes. Had it worked and controlled the heating pad, had Viviosun contacted me back with their advice on what to do (it’s rumored on Facebook they are not responding to emails possibly because of being located in China and not working due to current events), I would have given this a 5 star review and written how well it works. Hopefully I can post that review once I get a properly working replacement. Read more

This heat mat looks and works great. The digital control is easy to adjust from celsius to degrees and can be adjusted to the desired temp for the seeds you are working with. There is a thermostat connected probe that is placed in the planting area and it comes with a small chart that gives you the recommended temperature for the different plants. The water proof mat is easy to clean and is just the right size for my shelving unit. Read more

Only 4 stars because it doesn't always hold temperature sometimes it goes over it a few degrees and doesn't adjust. Not the worst if youre using for plants they wont mind but if youre trying to dial something in itll be something to keep in mind. Read more

These heat mats are wonderful. Easy to use. I bought some years ago and I just bought another one for my indoor greenhouse. They work great and the temperature control thermostat works well. Read more

I love this heat mat. I use it for kombucha brewing. After researching several similar products designed for kombucha, one of the reviews led me to these mats. I was honestly not expecting this quality at this price point. Very sturdy construction. Holds temperatures very well and temp probe is dead accurate. I keep my house around 67 F all year round and it was not an ideal temp to brew kombucha in. After I installed the mat my SCOBY is thriving and my flavors are much better. It stays a consistent 77-79 F. The controller is very easy to use and seems to be well constructed. Will upgrade to the double version when I get another brew vessel. I can't recommend this product enough. Read more

works like it should, good price. my old heat mat was 14 years old--hope this one last that long. well my second one i bought, the thermostat not working right. I emailed the company but no responce. I really wish i could buy American made heat mat! Read more