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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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1-3 business days - order today and we’ll deliver Wednesday at the earliest
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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


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

Warranty conditions

There is a manufacturer's warranty
(for further information and notes on the warranty see below!) on the part of the guarantor

JBL GmbH & Co. KG
Dieselstr. 3
D-67141 Neuhofen

with a duration of 24 months.

The following warranty conditions apply.

"In addition to the legal claims of the customer against the seller the guarantee comprises delivery of goods which are free of defects and doesn’t restrict the statutory claims for defects in accordance with § 437 BGB.
We, JBL GmbH & Co. KG Dieselstr. 3, 67141 Neuhofen, Germany offer the end customer a guarantee of 2 years from the date of purchase for functionality and absence of defects for the products listed below. Furthermore we offer the end user, after a successful product registration for the device within the statutory warrantee period, under https://www.jbl.de/productregistration an extended 4 years guarantee from the date of purchase.


Glass breakage and damage to the mains cable are exempt from the guarantee. The guarantee includes the repair at our discretion by replacement (free delivery of a comparable product) or its overhaul in accordance with the technical requirements.
The remaining period of the original warranty period applies for the part to be overhauled or replaced under this guarantee. The guarantee does not include the compensation of direct or indirect consequential damages. The guarantee only applies for sales to customers within the European Union. The guarantee is void, if the product was not correctly installed, maintained or cleaned, intentionally damaged or modified in any way not according to the intended purpose by the customer or third parties. Please contact your specialist retailer during the warranty period by presenting a valid purchase receipt or contact us under https://www.jbl.de/en/help-desk"

Source: User Manual


The legal defect rights towards Aquasabi GmbH & Co. KG according to §§ 437 ff. BGB (German Civil Code) are not compromised by this warranty.



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

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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)