Hydor Theo Aquarium Heater 25W - Submersible Fish Tank Heater for Freshwater & Saltwater Aquariums - Perfect for Small Tanks up to 10 Gallons

Hydor Theo Aquarium Heater 25w

Made in Italy

The Hydor Theo heater is an essential aquarium component for maintaining accurate and safe water temperatures in any tank.

Theo is a secure, functional and aesthetically appealing product.

 Main features:

• -Shock-resistant thanks to the shatter-proof glass used to make the product.
• -Resistant to thermal shock
• -Totally submersible
• -Operates vertically and horizontally 
• -Controls its own set temperature*
• -For aquariums 10-25 litres
• -Length 17.8cm
• Australian Plug

The inside of the glass tube is made with PTC film, enabling the device to control its own temperature and to limit power in the event of irregular function thanks to carbon aggregates that, by moving away from one another, increase resistance.