New aquarium heater functioning with the exclusive PTC (Positive Thermal Coefficient)
technology. The Hydor Theo range of aquarium heaters sets new standards for heating.
Made of a tough shatter proof material the Hydor Theo range are safe and stylish.
Being fully submersible makes this heater easy to hide at the back of the aquarium.
Temperature is controlled by a high precision micro switch which ensures the set
temperature is maintained with accuracy