
Zoo Med ReptiTherm Under Tank Heater (U.T.H.), Medium
Reptiles, being ectothermic or "cold-blooded," rely on external heat sources like the Sun to regulate their body temperature for proper functioning.
The Zoo Med ReptiTherm Under Tank Heater (U.T.H.) replicates the natural warmth of sun-heated surfaces, providing a similar radiant heat effect for your reptile. It serves as an excellent primary or secondary heat source for ground-dwelling reptiles, especially nocturnal species.
Zoo Med’s Under Tank Heaters are all UL/cUL certified and feature a durable solid-state nichrome heating element for consistent performance.
Size: 8" x 12"
Power: 16w
Usage Guidelines:
Attach the Zoo Med ReptiTherm Under Tank Heater to one side (either left or right) of the terrarium to establish a thermal gradient. It should cover about half of the terrarium floor and be spacious enough for your reptile to lie on fully.
This heater is most effective with a shallow substrate layer (less than 2"). For terrariums with deeper substrate, consider an overhead heat option like a halogen basking bulb or a ceramic heat emitter, depending on your setup needs.
To ensure your reptile’s safety and maintain the correct temperature, always pair this heat mat with a thermostat like the Zoo Med ReptiTemp Digital Thermostat to avoid overheating and prevent burns!

