ETH

• Can i use more than one heater inline?

  It is not practical as there will be insufficient room for connecting the appliances.

• Do I need to turn the Heater OFF when I am doing a water change?

  Hydor ETH Heaters MUST NOT be used when there is no flow of water through the heater. When undertaking water changes Hydor recommend that the heater is turned off and unplugged from the power socket at least 30 minutes before any waterchange. The Heater can ONLY then be turned back on when the Aq...