No danger of damage if the equipment is left running without water for a short period of time.
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 The traditional metal resistor coils have been replaced by a special polymer sheet,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.
Other Items from Hydor
THEO 50w Heater -
THEO 100w Heater -
THEO 150w Heater -
THEO 200w Heater -
THEO 300w Heater -
THEO 400w Heater -
ETH 300 watt In-line Heater -