Whether you want to optimize your sunny but too cool windowsill for growing cannabis seeds or cuttings, specifically support your plants in the development of new roots or want to heat a mushroom grow kit or terrarium supportive: This heating mat from the house of "Neptune Hydroponics" provides with economical 30 watts constant and even heat supply on the entire surface of 50 x 30 cm. Of course, the mat has a water- and acid-resistant coating and is intended for indoor use.