Eheim Thermocontrol e — Electronic Aquarium Heater ±0.5 °C - Eheim

Eheim Thermocontrol e aquarium heater — ±0.5 °C precision for freshwater and marine

The Eheim Thermocontrol e is a submersible electronic aquarium heater built for freshwater and marine tanks, with ±0.5 °C regulation precision — the same you'd get from a dedicated temperature controller. The glass jacket thermal shield widens the exchange surface and prevents hot spots that burn fish or invertebrates. Thermo Safety Control shuts the heater off automatically if the water level drops.

What this heater brings

• ±0.5 °C precision — matches a dedicated controller, no separate electronics.
• Temperature range: 20 to 32 °C (68 to 89 °F).
• Glass jacket thermal shield — no more hot spots, no more burns.
• Thermo Safety Control — cuts power on dry-run.
• Status light: red = heating, green = target reached.
• Twin suction cup mount included.
• Freshwater and saltwater compatible.

Specifications

• Model: Eheim Thermocontrol e
• Regulation: electronic ±0.5 °C
• Range: 20 to 32 °C
• Cable: 170 cm
• Compatibility: freshwater and marine
• Safety: Thermo Safety Control (dry-run protection)
• Available wattages: 25/50/75/100/125/150/200/250/300 W

Why get this heater from ReefSolution

• Eheim Classic 150 external filter — to round out a freshwater or auxiliary marine setup.
• Hanna HI98319 waterproof salinity tester — for marine reef aquariums.
• Salifert pH Test Kit — monitor pH alongside temperature.

Frequently asked questions

What wattage should I pick for my aquarium?

About 1 W per litre for freshwater, 1.5 W per litre for marine. A 200 L marine tank = 300 W; a 100 L freshwater = 100 W.

Is the Thermocontrol e reef-compatible?

Yes — the glass jacket handles saltwater and ±0.5 °C precision suits corals and sensitive invertebrates.

Do I need a separate controller with the Thermocontrol e?

No — the regulation is built in. An external controller (Inkbird, Neptune Apex) is still useful for redundancy.