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Hydrofarm MT10006 9-by-19-1/2-Inch Seedling Heat Mat

4.6 out of 5 stars 1,739 customer reviews
| 50 answered questions

List Price: $24.95
Price: $24.47 & FREE Shipping on orders over $35. Details
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9 inches x 19.5 inches
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  • Seedling heat mat is the new, stronger heating wire and thicker multi-layer construction
  • Increases success of seedlings and cuttings
  • Light, watering and planting information on mat
  • Warms root area 10-20 degree fahrenheit over ambient temperature to improve germination
  • Waterproof construction; 6-foot power cord
  • Seedling heat mat for better veggie, herb, and flower seed germination
  • Warms root area 10 to 20 degrees over ambient temperature
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Frequently Bought Together

  • Hydrofarm MT10006 9-by-19-1/2-Inch Seedling Heat Mat
  • +
  • Root Radiance Warm Hydroponic Heating Pad, 48 by 20.75-Inch
Total price: $83.66
Buy the selected items together

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Size: 9 inches x 19.5 inches
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Product Description

Size: 9 inches x 19.5 inches

The Seedling Heat Mat uses 17 watts to warm root area 10 to 20 degrees over ambient temperature and improve seed germination and increases the success of seedlings and cuttings. UL listed, waterproof construction with six foot power cord.

Product Details

Size: 9 inches x 19.5 inches
  • Product Dimensions: 20 x 10 x 3 inches
  • Shipping Weight: 15.2 ounces (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • Origin: USA
  • ASIN: B0001WV010
  • Item model number: MT10006
  • Average Customer Review: 4.6 out of 5 stars  See all reviews (1,739 customer reviews)
  • Amazon Best Sellers Rank: #137 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden)
  • Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.


From the Manufacturer

Customer Reviews

Top Customer Reviews

Verified Purchase
We are home gardeners and have tried many ways to provide bottom-heat for vegetable seed germination -- atop my always-on docked laptop was the most effective but the space was tiny. We bought a 20" x 20" heat mat and now have the right tool for the job. We set it up on a card table and found that it was not providing sufficient heat to the soil in the trays above. After an overnight on the mat, the soil surface was less than 10 degrees above ambient temperature. The room where the seeds are was 60 degrees overnight, and the soil surface in the trays was 68 degrees -- certainly not good enough for eggplant germination. I used an infrared thermometer (Raytek Minitemp MT6 here on Amazon) to check all temps. The exposed mat surface (no tray on top) was 82 degrees. I felt the surface on the underside of the card able and it was definitely warm, indicating heat loss downward. I wanted all of the heat to go up into the soil, so I cut a piece of rigid-foam insulation just slightly larger than the heat mat (22" x 22") and put it under the mat. Within 15 minutes the exposed surface of the mat was at 97 degrees and when I moved a tray to measure the temp of the mat beneath a tray, it was at 115 degrees. 2 hours later, the soil surface temperature was at 85 degrees. I am now confident the soil will get enough heat for proper germination, and I will begin using the heat mat thermostat to regulate soil temps based on the particular seeds we're starting (search the Web for "vegetable seed germination temperatures" to find one of the many reference charts available). We can also regulate temperature by covering or uncovering the trays to change the rate of evaporative cooling. We are well aware that covered soil is more prone to damping off/seedling death, which we now control with a spray of strong-brewed chamomile tea.
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Size: 68°F-108°F Verified Purchase
Just like a few other reviewers on here, I bought these for my under tank heaters on my two python tanks. They are very, very effective at regulating the temperatures accurately. I compare the temps on this product with my digital thermometers and they work great.

A few things some people would like to know:
- These are set it and forget it thermostats. You put in the maximum temp (i.e, 90 or 92) degrees and this thermostat will automatically kick on if the temp gets 2 degrees less (88 or 90 degrees respectively). This means you are not going to get too much variation in the warm spot hide which is a great thing but you CAN NOT change this variance. I don't see a real reason you need to though.
- The probe cables are perfect length and since they are designed for soil applications, they can be buried in substrate. They also have a suction cup if you need to monitor ambient air instead.
- TIP: Though some people say you should bury the probe and it should make have DIRECT contact with the UTH, I tried this out and I didn't like it. I am more concerned with the overall micro-climate in the hide or on the surface of the substrate so I just let it lay level with the substrate. That way, if the snake is colder than usual, they will coil in the hide and will give the thermostats a reading that is cooler than the actual temperature. This means the UTH will kick on a little longer than normal and warm the snake back up to a nice temperature.
- These thermostats are very heavy duty and can handle a large electrical load (1000 watts). Since most undertank heaters are 24 watts or less, you can definitely use this stat with multiple tank heaters. It has a three-prong connector on it and heavy-duty power cords/connectors.
Read more ›
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Size: 68°F-108°F Verified Purchase
Works like a charm.
Connect the Heat Mat monitor's power cord into the wall, then connect the seedling heat mat's power cord into the monitor.
To set the degrees is very easy. Hold down the button "SET" until the numbers are blinking. Then using the up and down arrows, set the desired temperature then press the "SET" button again to stop the blinking. Also press down the "UP" button for 6 seconds for readings in Fahrenheit or hold down the "DOWN" button for 6 seconds for readings in Celsius.
There is a little wire with a plastic white tip that hangs from the monitor.
Push the white part into the soil for temperature reading.(Once temperature is set, do not be alarmed when your heat mat reaches its maximum temperature you set it to then the Heat Mat monitor temperature will go up and down 3 degrees to prevent over heating)

This is very helpful for starting seeds.
4 Comments 105 of 109 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Size: 9 inches x 19.5 inches Verified Purchase
I love this heat mat. I use it for 7 day periods with it on 24/7 (no thermostat) placed underneath the gallon glass jar in which the kombucha I brew resides. It brews much faster in higher temperatures, and this heat mat provides 10 degree increase without ever getting dangerously hot.
3 Comments 83 of 85 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Size: 9 inches x 19.5 inches Verified Purchase
I bought this heat mat to get my seeds started inside. Since my apartment is cold and seeds like heat I thought i'd give it a try. Three days after I planted my seeds I had a ton of sprouts. Nearly every seed germinated. If you need some extra warmth to get your seeds going definitly get one of these heat mats.

It didn't get too hot and I was able to keep it right on my countertop. My only problem was I should have had a light to put over my seedlings once they sprouted. It's very easy to use as you just plug it in and put your tray on top. The instructions are even written right on the mat itself.
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Hydrofarm MT10006 9-by-19-1/2-Inch Seedling Heat Mat
This item: Hydrofarm MT10006 9-by-19-1/2-Inch Seedling Heat Mat
Price: $24.47
Ships from and sold by Amazon.com
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