

🌱 Grow smarter, not harder — your seedlings’ secret weapon!
The MARS HYDRO 10''x 20.75'' Seedling Heat Mat with Thermostat Combo Set offers precise temperature control from 32 to 110°F via a user-friendly digital thermostat. Utilizing efficient infrared heating particles, it delivers 97% thermal efficiency for faster, uniform seed germination and growth. Built with waterproof, heavy-duty PVC and safety certifications, it ensures durability and safety with automatic overheat protection. Perfect for indoor gardening, greenhouses, terrariums, and aquariums, this versatile heating pad is a must-have for professional and hobbyist growers aiming for optimal plant development.





























































| Best Sellers Rank | #70,261 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #71 in Plant Heating Mats |
| Customer Reviews | 4.6 out of 5 stars 463 Reviews |
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
Trustpilot
1 month ago
2 months ago