JBL ProTemp e

JBL ProTemp e

  • External heater for aquariums
  • Adaptors for various hoses are included
  • Available in two variations for different aquarium sizes
  • With a digital temperature display
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The JBL ProTemp e is an external heater for aquariums. It is attached with a hose between the external filter and the filter outlet and thus heats the aquarium to the desired temperature.

Due to the possibility of shifting the temperature control of the tank so that it is located outside the aquarium, you can minimize the technology in the tank and nothing disturbs the perception of a carefully designed aquascape or nature aquarium.

Manual JBL ProTemp e300/e500 - - download PDF


  • Outdoor heating element available with 300 or 500 watts
  • Connection pieces for 12/16, 16/22 and 19/25 mm hoses included
  • Available in two variations for different aquarium sizes
  • Easy to read thanks to the digital display


JBL - ProTemp e - 300
Hight 23,5 cm
Length 9 cm
Width 8 cm
Suitable for aquariums 90 - 300 l
JBL - ProTemp e - 500
Hight 29,5 cm
Length 9 cm
width 8 cm
Suitable for aquariums 160 - 600 l

Technical specifications

JBL - ProTemp e - 300
Power 300 W
Voltage 240 V
JBL - ProTemp e - 500
Power 500 W
Voltage 240 V



JBL is a traditional German company with a very wide range of products for aquarists. From high-quality fish and shrimp food to external filters and water plant fertiliser, JBL offers a wide selection for aquarium enthusiasts.

JBL's research and development constantly brings new, innovative products onto the market. Whether aquascape, fish aquarium, shrimp tank with a scurry factor or a pure water plant aquarium in Holland style, JBL offers suitable aids for set-up and maintenance for all these directions.

General information

Item no.
EAN 4014162604286
Weight 0,50 kg
Shipping weight 0,60 kg

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This item has been rated 5 out of 5 stars
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Raimondas A.
Very accurate and good heater!
23rd January 2020
JBL - ProTemp e - 500
JBL - ProTemp e - 500

I purchased this heater in goping to reduce equipment inside my tank. I connected it vertically in my filter outlet hose and set the trmperature at 25 degrees. (read more)