EHEIM thermocontrol e 50W Electronic Aquarium Heater

The EHEIM thermocontrol e 50 is EHEIM's electronic version of its classic aquarium heater. Electronic control sets and holds the water temperature precisely, anywhere from 20 to 32 °C (68 to 90 °F), with a control accuracy of plus or minus 0.5 °C. It is sized for aquariums of about 25 to 60 liters (roughly 7 to 16 US gallons), works in freshwater and saltwater, and is made in Germany. Browse our other aquarium heaters.

Features

• Electronic temperature control. Set any temperature between 20 and 32 °C with no readjustment needed, and the heater keeps it constant to within plus or minus 0.5 °C.
• Status lamp. The control lamp glows red while heating and green once the set temperature is reached.
• Dry-run protection. EHEIM's Thermo Safety Control protects the heater if it runs out of water.
• Laboratory glass coating. The glass jacket enlarges the heating surface for even heat output, acts as a heat shield, resists chemicals and biological attack, is impact resistant and tolerates the temperature swings of a water change.
• Fully submersible and waterproof.
• Freshwater and marine. Suitable for both.
• Long cord. About 170 cm (roughly 5.5 ft).
• Double suction holder included for mounting on the glass.
• 3-year EHEIM warranty.

Setup

1. Mount the heater inside the aquarium with the included double suction holder.
2. Set your target temperature between 20 and 32 °C (68 to 90 °F).
3. Plug it in. The lamp shows red while heating and green when the water reaches the set temperature.

Always keep the heater in the water when it is plugged in. Thermo Safety Control is a safeguard, not a reason to run it dry.

Specifications

Recommended Pairings

• Aquatop GT-001 Floating Glass Thermometer to double-check the water temperature

FAQ

What size tank is the 50 W for?
EHEIM rates the thermocontrol e 50 for aquariums of about 25 to 60 liters, roughly 7 to 16 US gallons.

What does the e mean?
It is the electronically controlled version of the EHEIM thermocontrol, for more precise temperature setting, measurement and stability.

How do I know it is working?
The control lamp is red while the heater is warming the water and turns green when it reaches the set temperature.

Can I use it in a reef tank?
Yes. EHEIM lists it as suitable for freshwater and marine aquariums.

What happens if the water level drops?
EHEIM builds in dry-run protection (Thermo Safety Control). Keep the heater submerged whenever it is plugged in.