EHEIM thermocontrol 300W Precision Aquarium Heater

Reliable, adjustable heating for aquariums up to 1000 litres — made in Germany.

The EHEIM thermocontrol 300 is a premium, precision-controlled aquarium heater designed for large aquariums up to 1000 litres. Built with advanced electronic thermal technology and a laboratory-grade glass jacket, it ensures safe, even heat distribution for freshwater and marine setups alike.

Engineered in Germany for accuracy, safety, and long-term reliability, this heater is fully submersible and features essential safeguards like automatic dry-run protection (Thermo Safety Control).

Key Features

• Adjustable temperature control: 18°C to 34°C

• High-precision accuracy: ± 0.5°C

• Simple recalibration option: ± 2°C

• Thermo Safety Control: automatic shut-off when dry

• Laboratory-grade glass jacket for safe, even heat emission

• Watertight and fully submersible

• Heating function indicated by control lamp

• 170cm cable length with double suction cup holder

• Trusted Made in Germany quality

• 3-year manufacturer guarantee

Technical Specifications