VIVOSUN 48" x 20.75" Seedling Heat Mat w/ Dual Digital Thermostat - 2 Pack

Each 48" x 20.75" mat can comfortably fit four standard 10" x 20" (1020) seedling trays side-by-side, making this 2-pack ideal for starting up to eight trays at once.

The controller has two readings on its screen. One shows the target temperature that you have set using the buttons. The other shows the current, real-time temperature being read by the probe. This allows you to confirm at a glance that your mat is maintaining the correct temperature for optimal germination.

Absolutely. The mat itself has an IP67 waterproof rating, meaning it's protected against splashes, spills, and humidity. You can safely wipe it clean. However, the thermostat controller and electrical plug are not waterproof and should always be kept dry.

Far-infrared technology heats objects directly and evenly, much like the sun. Unlike older resistance-wire mats that can create hot and cold spots, far-infrared provides uniform warmth across the entire surface. This consistency is crucial for preventing root damage and ensuring all your seedlings germinate at the same rate.

The ideal temperature varies by plant species, but most seeds germinate best in a range of 70-85°F (21-29°C). The precise digital thermostat included with this mat allows you to dial in the exact temperature your plants need. For more detailed information, consult our guide on grow room temperature and humidity.

Yes. These mats are excellent for propagating clones, brewing kombucha, fermenting, and any other hobby that requires consistent, gentle, low-level heat. Their large size and precise control make them incredibly versatile.