Exo Terra Heat MatTerrarium Substrate Heater Ideal for all glass terrariums For mounting under and on the side of terrariums The conductive heat source for reptile, amphibian, arachnid, and planted terrariums Helps in thermoregulating important for metabolism, digestion, appetite, and activity Safe, even heat distribution Reptiles and amphibians are cold blooded and in their natural habitat they often use surfaces heated by the sun to warm up. The Exo Terra Heat Mat is