EHEIM Jäger heater

EHEIM Jäger is a classic heater from the German brand EHEIM that keeps the aquarium water at a steady, fish-friendly temperature. TruTemp technology enables precise temperature setting, and the shock-resistant laboratory glass withstands aquarium conditions reliably.

The Jäger heater is available in several wattages from 25 W to 300 W, so you choose exactly the right power for your aquarium according to the tank volume. The heater suits both freshwater and marine aquariums.

Features and benefits

• TruTemp precision: the temperature is adjustable precisely, and the setting can be recalibrated if needed to ensure a correct reading.
• Shock-resistant glass: laboratory-grade glass withstands knocks and temperature fluctuations.
• Run-dry protection: thermal protection prevents overheating.
• Indicator light: an ON/OFF light shows when the heater is heating.
• Freshwater and marine: a versatile heater for all aquariums.
• Brackets included: a holder and suction cups for easy installation.

Specifications (power → guideline aquarium size)

• 25 W: approx. 20–25 l
• 50 W: approx. 25–60 l
• 75 W: approx. 60–100 l
• 100 W: approx. 100–150 l
• 150 W: approx. 200–300 l
• 200 W: approx. 300–400 l
• 250 W: approx. 400–600 l
• 300 W: approx. 600–1000 l
• Temperature range: approx. 18–34 °C
• Suits freshwater and marine

Use and tips

Choose the wattage generously according to the aquarium volume so the temperature stays stable even in a cool room.

Frequently asked questions

How powerful a Jäger do I need?
Choose the wattage according to the aquarium volume using the guideline table; in a cool room more power is better.

Is the Jäger suitable for a marine aquarium?
Yes, it suits both freshwater and marine aquariums.

Akvaariokeidas is a Finnish aquarium specialist online store offering a wide selection of quality products with fast delivery and expert service. We are happy to help you choose the right product so your aquarium hobby runs effortlessly.