This optional control, for the Hydrofarm Seedling Heat Mat, is helpful when you are starting seeds in colder or warmer environments.

This handy accessory to the Hydrofarm heating mats ensures that plants are kept at the optimum temperature for healthy, prolonged life. The thermostat is usable with all Hydrofarm mats and is accurate within 2 degrees F, plus or minus. The controllable temperature ranges from 68 to 95 degrees. Submerging the controller or the probe into the water is not recommended, and the thermostat will automatically shut off when the probe temperature reaches 110 degrees. With its suction-cup mounting device, the thermostat can also be used in a terrarium for air-temperature control and measurements. Gardeners who love their work to pay off quickly will be glad to know that using a thermostat and heating pad with the hydrogarden will assure faster sprouting. --Eli Huntington