VIVOSUN 48" x 20.75" Seedling Heat Mat and Digital Thermostat Combo Set, UL & MET-Certified Warm Hydroponic Heating Pad for Germination, Indoor Gardening, Greenhouse

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!

I have 10 gallon glass tanks set up as terrariums. Since the substrate stays moist at all times, this gently heats the soil slowly. It's just a backup/booster as the house gets cold in the winter. It will not keep the air in the terrarium warm, but it does keep the soil warm. (which is how it's designed - a low and slow heater, which works best on water due to it's high heat capacity) Placed under the tank, with the soil probe set to "70F" it kept a range of 68-72F in the soil even if the room is 60F. My substrate is 4-6 inches deep, well aerated, and kept moist. Surprisingly, it works on tanks that have 4 little feet raising the tank up. (such as the Thrive brand 10 gallon open front vivarium tank) I assumed all the heat would simply rise up, hit the bottom of the tank, and proceed to leak out the sides. Without any significant warmth added to the soil. But it actually warms the soil just fine. Remember that very cold water shouldn't be poured into a glass tank with a heater touching it, because the temperature difference could crack the glass. That being said, these heaters heat very gently, without touching the glass (in my set ups), and I pour room-temperature (60F) water into the tank to water the soil. Pro - if you hang the controller up, you can easily see the current temperature of the soil reported by the soil probe. Downside - it's not quick/easy to change the temperature setting. It is a strange design, where you do NOT press the up or down arrow buttons to adjust the temperature up or down. Instead, you must hold down the setting button for a long time until it blinks. Then press up/down buttons to chose the temperature goal. Then hold down the setting button for a long time until it goes back to showing the current temperature.

I use this heat mat and thermostat as a sourdough proofer, and it works fantastic. I set it up inside an old soft cooler with a small rack to hold my jars and dough, and it creates a perfectly controlled environment. The thermostat maintains a consistent temperature, which I’ve confirmed by checking the internal temp of my starter and dough. It’s reliable, easy to use, and does exactly what it should. This is a very effective and economical alternative to expensive proofing boxes. Highly recommend for sourdough baking.

Thermostat sensors are finicky. Have 2, 1 works as it should the other off by 4 degrees at times. Timmers work great and heating pads work as they should. Just that dang temperature probe

Love this combination thermostat and mat. I don’t know how people can use the mat without the thermostat though. I accidentally left the probe outside of the seeding packets I was germinating, so the mat did not shut off. When I discovered and checked the temp in my packets it was 91 degrees. The mat certainly works! Luckily, since I am germinating hot peppers I think they will be fine. Point is, the mat heats up for sure! And the thermostat is easy to set and shuts off the mat as soon as the soil or whatever you are measuring reaches the temp limit you set.

Well, after returning 3 heat mats for various reasons, I finally found this one that works like it should! 🤞The size is perfect for my seedlings, the digital thermometer is easy to use, and it functions well so far. It distributes the heat pretty evenly. I think it's worth the price. This heat mat used along with my grow light, (not shown), hopefully will germinate my Parlor Palm seedlings quicker than usual. Time will tell if my seedlings sprout in a couple months. I will update then. For now, I do recommend this heat mat.

Seems like a good quality product, only had it under the seedlings for 2 days and got a bunch to sprout. I only had one before that. The thermostat works great, the temp is off by a half degree but that's not any problem. Great heat mat for the price

This heating mat is definitely not like most heat mats. I bought me in 2022 for sitting my epoxy on to keep it warm so it produced less bubbles. I would have to say this may here is very useful for many things. The mat is very sturdy, I bought some different mats this year and they are just garbage. The mat is flimsy and wavy, that’s why I just bought another one of these mats. The size of this mat is exceptionally large, it holds all my epoxy bottles and I do have a lot more than 10 and still have room for more. The material is very strong and durable, you don’t have to worry about tearing up this mat because it will outlast the digital thermostat. The heating performance is amazing, the good thing about it is you can control the temperature. One thing I will say be aware that after a few years (or at least mine did) the thermostat started acting finicky it would show the display and sometimes it wouldn’t. It maybe on or may not. I had this mat for a couple of years before it started acting weird so I put it in the trash and didn’t get another one until now. I wish I would have ordered one way sooner, I wouldn’t have been fighting bubbles like I have been in my epoxy. As I said earlier the material is very strong a durable, and you definitely get your moneys worth in this mat. I am very pleased with my purchase I made.

ich habe es gekauft um den Akku meine PV Anlage im Winter zu wärmen und im betriebs Temperatur zu halten. Der verbrauch von der heizmatte war unter der erzeugte Strom von PV Anlage somit hat es sich selbst er heizt.. TOP

Pad y termostato muy buenos

Had this heat mat for just over a month now. It’s fab. Controls the temperature for my chilli’s and sweet peppers great! Really happy with it! Will be ordering another for my tomato’s

Excelente

Excellent heat mat. I use it to propogate my chilli plants, and the thermostatic heater ensures a consistent heat it maintained. Easy to set up, and easy to program the thermostat.