VIVOSUN Durable Waterproof Seedling Heat Mat 3" x 20" UL & MET-Certified Heating Pad for Hydroponic, Kombucha Tea, Brewing, Fermentation & Plant Germination

I have 3 of these types of strip heating mats. I use them to go around my gallon sized kombucha jars during the winter and they work fine. They keep my fermenting kombucha at just the right temperature. Two of these mats I've had for years and only purchased another one fairly recently. I find them to be very useful and am very pleased with them.

Works well to quickly heat up to 100F.

I have been using these seed starting heat mats for several seasons now and they are very durable. The material is exceptional and heats very evenly between 65 and 70 degrees, perfect for germination. Highly recommend.

I'd prefer it to let you set the temperature but for the price it's hard to complain about it. Works fine, I'd just recommend to check the temperature every so often to be safe.

Prefect for the price, gets a little warm for my starts but a towel in between makes it perfect

These VIVOSUN seedling labels do exactly what they claim—no drama, no surprises. They’re sturdy, waterproof, and don’t turn into soggy cardboard the second you water your plants. Ink stays put, labels don’t fade, and they survive humidity like champs. They’re the perfect size for seed trays and pots, easy to write on, and rigid enough to stand upright without falling over every time you look at them wrong. I’ve used them in damp soil and humid grow environments, and they still look readable instead of “ancient ruin” status. Are they exciting? No. Are they useful? Absolutely. If you’re tired of guessing which plant is which or playing “mystery seedling roulette,” these solve that problem cleanly. Sometimes the best tools are the boring ones that just work—and these are exactly that.

It’s time to start some seeds and this jumbo pad is just what you need to utilize maximum space with the right amount of heat for germination. Great value for the money and easy to use

Very nice durable and good quality arrived on time

Die 20w sind perfekt für Pflanzen Aufzucht. Sie wird nicht zu heiß. Man braucht aber definitiv einen Regler mit Temperatur Fühler dazu.

Un tapis de qualité de 4 pieds de long, très large, on pourrais facilement y mettre 4 domes. Je l'ai utilisé quelque fois et il fonctionne a merveille. A utiliser de préférence avec un thermostat numérique, sinon ca peux devenir trop chaud pour les plantes. 5/5

Used this last spring to help germinate seeds and it works well.

EDIT - Sorry, I reviewed the mat and the Vovosun Thermostat Controller at the same time! The mat by itself gets too warm without being controlled by a thermostat controller. I wrap this around the bottom of the bottle and stick the probe onto the bottle about half way up. It keeps the temperature within a half a degree to a degree according to the thermometer and it seems pretty accurate when checking with the temp strip on the bottle. It's working great and will make kombucha making much easier through the colder months!

A quality heat mat can significantly improve germination rates and plant growth. Providing consistent warmth to the roots encourages healthy development. This gentle heat source creates an ideal environment for seedlings and young plants. It can also help maintain optimal temperatures during colder months. Using a heat mat is a simple yet effective way to boost your indoor gardening success.