Each heater is calibrated two separate times during production to ensure accuracy within one degree of the temperature setting on the dial. Extremely D urable and Guaranteed for Life Aqueon Submersible Aquarium Heaters are made from thermal shatter-resistant glass and were designed to absorb impacts, making them extremely durable. All Aqueon heaters come with an unparalleled lifetime warranty to back up their unsurpassed longevity.
Easy To Use
The molded control knob is easy to grip, even while wet. The numbers on the temperature dial are large and easy to read so you can change the temperature setting without removing the heater from the aquarium.
Safe, Long-Lasting and Dependable
The thermal shatter-resistant tube and temperature dial are double-sealed and UL approved for safe, long-term submersion in water. The heater is also programmed to turn itself off when not properly submersed to avoid overheating and damage. An indicator lamp lets you know when the heater is on.