With the EHEIM precision heater, your fish will enjoy the ideal temperature in any aquarium.
Diameter Ø 36 mm
Height 506 mm
Performance at 50 Hz 300 Watt
Max. temperature 34°C
Sea water Yes
Min. temperature 18°C
Freshwater Yes
Packing dimensions (Width) 6.5 cm
Packing dimensions (Height) 58.5 cm
Packing dimensions (Depth) 5 cm
For aquariums up to approx. 1000 Liter
For aquariums of about. 600 Liters
Simple ideas often turn out to be the best. Take the aquarium heater, for instance, designed as a rod. This heating rod is effortlessly submerged in the water to warm it up. While the concept has remained the same for decades, numerous advancements have occurred. Today, the EHEIM adjustable heater is a state-of-the-art electronic heating device featuring the latest technology. A casing made from specialized laboratory glass enhances the heating surface, acts as a heat shield, and guarantees optimal, even heat distribution. Whether you need to heat a 20 or a 1000-litre aquarium, you can select from 9 different sizes.
Advantages of the EHEIM thermostatic heaters
Exact temperature adjustment from 18 to 34 °C
Easy and secure recalibration (±2 °C)
Temperature control precision ± 0.5 °C
Heat maintained at a stable level
Heating status indicated by a control lamp
Fully submersible (waterproof)
Equipped with automatic dry run shut-off (Thermo Safety Control)
A glass jacket increases the heating surface and ensures optimal even heat emission
Convenient cable length approximately 170 cm
Includes double suction cup holder
9 sizes available for aquariums ranging from 20 to 1000 litres
Suitable for both freshwater and marine environments
Precision, user-friendly design, quality, and safety “Made in Germany”
The EHEIM aquarium heater represents an evolution of the classic heating rod.
The temperature can be accurately set between 18 and 34 °C and can be recalibrated if necessary (±2°). The temperature control accuracy is ± 0.5 °C.
The heat remains consistently stable. A control lamp indicates when the heating function is active.
This rod is completely waterproof, can be fully submerged, features an automatic dry run shut-off (Thermo Safety Control), and is suitable for both freshwater and saltwater aquariums.
One of the key innovations is the glass jacket:
- It enhances the heating surface,
- concentrates the heat, ensuring optimal and even heat emission, and
- acts as a heat shield (safe to touch without harming the aquatic life).
The jacket is crafted from specialized laboratory glass developed for research applications. As a result, it is free from pollutants that could leach into the water. It is resistant to chemical and biological agents, free from fissures and hairline cracks that could allow condensation to seep in. Even significant temperature fluctuations that may occur during water changes will not damage this glass.
