(Mainland UK only)
Hydor External Inline Aquarium Heater 300 watt (ETH300) Features: External thermal heater which includes the PTC system. Suitable for all external canister filters. Can be fitted in tank return hose from all makes of external filters Completely safe. No danger of damage if the equipment is left running without water for a short period of time. We always advise installing these heaters in an upright position for prolonged life expectancy. Patented heating element made with the exclusive PTC system. The traditional metal resistor coils have been replaced by a special polymer sheet, silk-screened with heating ink. Setting of temperature controlled by an electronic circuit with indicator light. Connectors suitable for any flexible pipe of all external filters. 300w, suitable for 16mm Hose, and for Aquariums up to 300 litres
