

🌱 Heat your roots, grow your future — don’t let your seedlings miss out!
The MARS HYDRO 10''x 20.75'' Seedling Heat Mat with Thermostat Combo Set offers precise temperature control from 32 to 110°F, powered by highly efficient infrared heating particles that ensure rapid and uniform warmth. Its waterproof, durable design with built-in safety features makes it perfect for accelerating seed germination and indoor gardening, while its versatility extends to terrariums and aquariums. Trusted by thousands of gardeners, it’s a smart, energy-efficient upgrade for anyone serious about thriving plants.




























































| ASIN | B09CM3L32P |
| Best Sellers Rank | #55,044 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #61 in Plant Heating Mats |
| Customer Reviews | 4.6 4.6 out of 5 stars (464) |
| Item Weight | 1.76 pounds |
| Item model number | 10'' x 20.75'' heat mat kit |
| Manufacturer | MARS HYDRO |
| Package Dimensions | 10.39 x 4.41 x 4.41 inches |
K**C
Great heat mats for cacti!!!
I have several of the standard non controllable heat mats that work, but they only heat to about 6-8° over ambient temp. I got these specifically for cactus seedlings and they work well. I’m able to set a temp well above ambient and they’ll reach and maintain that temp giving me faster seedling growth rate and excellent germination rates. The controller makes it nice that you can plug it in with the light timer and have the heat off at night once seedlings get a bit older to produce a more natural day/night temp swing, this makes cacti seedling more hardy. I do several thousand cacti seedling in fall so they can stay in the germination tents over winter before I need the tents for spring veggies and these mats give me great results. The Ferocactus wislizeni seedlings in the included picture are 28 days from seed sowing date and are 2x the size they’d be with the old heat mats, they are pencil eraser size at less than a month from sowing. I’ll be buying a few more of these before long to replace the old style mats.
B**Y
Great seedling mat!!
I recently purchased the Mars Hydro Heat Mat with Control for my indoor gardening setup, and I have been extremely impressed with its performance. This heat mat has been a game-changer for my seed starting process, providing consistent and gentle heat to promote healthy seedling growth. One of the standout features of this heat mat is its precise temperature control. The included thermostat allows me to easily adjust the temperature to suit the needs of different plants, ensuring optimal germination and growth. The mat heats up quickly and maintains a stable temperature, creating the perfect environment for seedlings to thrive. I also appreciate the durability and quality of the Mars Hydro Heat Mat. The mat is well-made, with high-quality materials that feel sturdy and long-lasting. It's also water-resistant, which is essential for indoor gardening where spills and moisture are common. Another great feature of this heat mat is its energy efficiency. Despite running 24/7 during the germination period, I've noticed no significant increase in my electricity bill, making it a cost-effective choice for indoor gardeners. Overall, I highly recommend the Mars Hydro Heat Mat with Control to anyone looking for a reliable and efficient heat mat for their indoor gardening needs. It has exceeded my expectations and has become an essential part of my gardening setup.
K**P
Don’t expect it to heat like a reptile heating mat
I’m a new grower and i see many reviews complaining about the heat of the mat. You’ll know it’s working if you see condensation on the bag or container you’re using and mine is doing its job. Maybe the heat is a little low but I don’t know. What I do know is that I’d rather my germination take longer than my seed burn up. It works, it’s small, and it was good value
J**L
Buy this mat.
This is my third Mars Hydro Mat, the second large one. They're great, I have had zero problems. Even heating, and easy to setup. My oldest mat is four years old. They allow me to start seeds much earlier, and the seeds germinate very quickly. Highly recommend.
W**E
Good enough
This heating mat, temperature sensor and thermostat work okay. It doesn’t seem to be able to get up to the temperature I want, but it does work in the lower range.
M**O
Better than expected
Price dropped 1 dollar making this an even better value. Simple to remember how to change settings (don't need to save the manual) Temperature in my growing chamber stays steady through normal room temp fluctuations. Note though that this mat is not intended to create a large rise in temperature. I use in a 68 to 72 degree room to raise temperature in my bin to 77 degrees or so. I like it enough that I just bought another
D**S
It works
It works just like they said it would, nothing difficult about using it.
A**R
Came in early
Works amazing keeps the soil at a perfect temp even in colder weather
M**S
Funktioniert super und ist Temperatur geregelt. Da mein Setup in einem nicht beheizten Keller steht und das San Light nur 16-18h angeschaltet ist muss im Winter die heizmatte her um Wachstums Hemmungen zu vermeiden. Bisher bin ich sehr zufrieden schätze die matte auch eher sparsam ein, verwende sie in Kombination mit gummi Dämmungs Matten als untersetzer. Von Ende Oktober bis Ende Februar sehr nützlich.
A**R
They work great! I purchased 2 for keeping my very expensive lithium batteries for my solar system warm. The batteries should never go below freezing. I built a insulated box and place the mats under the batteries and set the temperature to 10 degrees C. They draw very little current for what they produce. I used two for redundancy if one fails. I cannot express enough how well they work and use very little power. The controllers show a temp difference of about .4 degrees so they are not perfectly accurate but for the price they are awesome. user friendly to set up. Build quality looks good. Highly recommended.
C**S
The controller is a bit large for the setup.. Not sure how long it will last or how efficient it is.. time will tell.
A**O
Non serve a nulla. Da descrizione indica che sia utilizzabile per produrre birra (che era il mio obiettivo). L'ho testato prima di iniziare la produzione, e sfortunatamente nonostante tutti gli accorgimenti, non arriva alla temperatura indicata. Il tappetino non riscalda fino alla temperatura desiderata. Tutto qui. Effettuata la procedura di reso.
T**Y
fonctionne tres bien, semble maintenir assez bien la température requis. Bon produit
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