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The JBL ProTemp External is a powerful external flow-through aquarium heater that provides reliable and precise temperature control outside the tank. Installing it in the return hose of an external filter or circulation pump keeps the aquarium free of internal heating elements. This creates more space in the tank, improves its appearance and reduces the number of visible technical components.
The external heater is suitable for aquariums ranging from 10 to 600 litres and allows for continuously adjustable water temperatures from 20 to 35 °C. The modern digital LED display clearly shows the current and target temperatures and enables straightforward operation. Precise control ensures even heating of the water, while the high-quality ceramic heating element operates efficiently and reliably.
Thanks to the included adapters, the JBL ProTemp External is compatible with standard hose sizes of 12/16 mm, 16/22 mm and 19/25 mm. Safety screw caps ensure the hoses are securely held in place. For clean, space-saving installation, the unit can be conveniently mounted under the cabinet using the included wall mount. The external heater also impresses in terms of safety, featuring an integrated shut-off in case of overheating or dry running. The set temperature is stored even after a power outage. A button lock provides additional protection against unintentional changes to the settings.
The JBL ProTemp External is the ideal solution for anyone who values discreet, efficient and safe aquarium heating.
JBL Through Flow Heater ProTemp External
- external flow-through heater for aquariums from 10 to 600 liters
- no heating element required inside the aquarium
- precise temperature control from 20 to 35 °C
- digital LED display for setpoint and actual temperature
- efficient ceramic heating element
- safety shut-off in case of overheating or dry running
- saves set point temperature in case of power failure
- includes adapters for 12/16 mm, 16/22 mm, and 19/25 mm hose sizes
- space-saving installation outside the aquarium
- incl. wall mount
Technical specifications for JBL ProTemp External
Suitable for aquariums: 10-600 L
Temperature range: 20-35 °C
Power: 500 W
Voltage: 220-240 V/50 Hz
Suitable hose sizes: 12/16 mm, 16/22 mm, 19/25 mm - external flow-through heater for aquariums from 10 to 600 liters
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For which aquariums is the JBL ProTemp External suitable?
The JBL ProTemp External is suitable for aquariums ranging from 10 to 600 liters, making it ideal for a wide variety of freshwater and saltwater aquariums.How is the JBL ProTemp External installed?
The external heater is installed in the return hose of an external filter or an external circulation pump. This ensures that no heating element is located directly in the aquarium.What are the advantages of an external flow-through heater over an internal heater?
An external flow-through heater saves space in the aquarium, improves the tanks appearance, and reduces visible equipment. It also leaves more room for decorations, plants, and animals.What hose sizes are supported?
The JBL ProTemp External is suitable for hose sizes 12/16 mm, 16/22 mm, and 19/25 mm. The appropriate adapters are included in the package.What is the operating temperature range for the device?
The water temperature can be set within a range of 20 to 35 °C.How is the temperature displayed?
The digital LED display clearly shows the current water temperature as well as the set target value.Is the setting retained after a power outage?
Yes, the set temperature remains stored and does not need to be reset after a power outage.What safety features does the JBL ProTemp External offer?
The device features an automatic shut-off in case of overheating or dry running. Additionally, a button lock prevents accidental changes to the settings.Can the JBL ProTemp External be used inside the aquarium?
No, the JBL ProTemp External is designed for external installation outside the aquarium and is integrated into the water circulation system.Is the JBL ProTemp External also suitable for visually sophisticated aquariums?
Yes, an external heater is particularly advantageous in open or especially decorative aquariums, as no additional heating equipment is visible inside the tank.









