• Attaches to external hose
• Easy to connect to cannisters and sumps
• PTC Technology
• Unique Vertical application
• Electronic Temperature Control
• 200 Watt available to fit 12mm and 16mm Pipe

The Hydor External Aquarium Heater is an alternative to heating your aquarium water.

The Hydor ETH Heater has a unique application that fits vertically on the pipes from your external filter. The heater has exclusive PTC, Positive Thermal Coefficient technology, ensuring maximum safety against risks of overheating.

The heater has a electronic temperature control with a signal light as well as a hanging hook for easy installation. Connecting onto the pipe work is easy and convenient.

Using an External Heater reduces the amount of the equipment in the tank which increases the enjoyment of the aquarium and gives the fish more room to live, helping to promote a healthy tank

The ETH heaters are available as 200 Watt to fit both 12mm and 16mm external filter hose pipe and the 300 Watt in 16mm.

Suitable for tropical and marine aquariums.

*Please Note -Temperatures stated are a guide to show the maximum possible increase from the ambient temperature of the room the tank is situated in.