Heating tube can be positioned in either a vertical or horizontal position in the water.
Caution for heating elements
The titanium heater is for main glass aquarium tank use only. Do not use the titanium heating tube in an acrylic sump tank (wet / dry trickle filter tank) of designed module tank.
Fully submerse heating element into water. Never expose any portion of the heating element to air. The exposed portion of heating element may burn out and malfunction
Never expose the thermo sensor to air. Exposure will produce inaccurate water temperature reading and cause heater to unnecessarily heat water according to the incorrect thermo sensor reading.
Never place the heating element under gravel. This will hinder even heating element dissipation.
Never place the thermo sensor rear the heating element. It will cause inaccurate control of the water temperature. Place the thermo sensor at least 12 inches (1 foot) away from the heating element.
Whenever putting any kinds of electrical devise into your aquarium, whether, it is water pump, heater etc, it is advised that all aquarium be grounded with a proper grounding probe. If not, possible electrical shock may occur.