The THEO heater has all the essential features for maintaining your aquarium`s water temperature precisely and consistently. Featuring patented thermal technology (PTC) which makes it among the safest aquarium heater lines on the market and is UL Listed by design, not by the use of accessories.

Made from specially engineered shatterproof glass which, while not unbreakable, is designed to resist breakage in most normal aquarium situations. Highly accurate due to the use of precise micro-switch technology.

The exclusive technology used and the high quality of the components guarantee a long life.

• For use in freshwater and marine aquariums
• Submersible
• Anti-thermal shock
• Shock resistance
• Graduated scale dial
• Vertical or horizontal positioning
• Maintains set temperature precisely