Eheim Jager Thermocontrol Heater

Introduction

The Eheim Jager Thermocontrol Heater is a precision-engineered solution for maintaining ideal water temperatures in freshwater and marine aquariums. With a wide temperature range and advanced safety features, it provides consistent and safe heating for your aquatic pets. Available in multiple wattages, it suits a variety of tank sizes.

Key Features

• Adjustable temperature from 18°C to 34°C (65°F to 93°F) with ±0.5°C precision

• TruTemp recalibration dial for accurate temperature adjustment

• Automatic dry-run shutoff with Thermo Safety Control

• Made from shatterproof laboratory-grade glass

• Fully submersible design for efficient and uniform heat distribution

• Indicator light shows when heating is active

Specifications

Length: 100W – 31 cm, 150W – 34 cm, 200W – 40 cm, 300W – 50 cm
Temperature range: 18°C to 34°C
Material: Laboratory-grade shatterproof glass
Mounting: Vertical with suction cups (included)
Submersible: Yes
Power source: Standard mains power

Usage Guidelines

• Place the heater vertically inside the aquarium and secure it with the provided suction cups
• Ensure the heater is fully submerged before plugging it in.
• Set your desired temperature using the dial, and verify with a separate aquarium thermometer.
• Unplug the heater during water changes or when removing it from the tank.
• Place near a filter outflow to help distribute heated water evenly.

Available Variations

• Eheim Jager Thermocontrol 100W – for tanks up to 150 liters
• Eheim Jager Thermocontrol 150W – for tanks up to 300 liters
• Eheim Jager Thermocontrol 200W – for tanks up to 400 liters
• Eheim Jager Thermocontrol 300W – for tanks up to 1000 liters

Recommendations

• Perfect for aquarists seeking reliable, precision temperature control
• Ideal for both freshwater and marine aquarium setups
• Use with a quality aquarium thermometer for best results
• Pair with a temperature controller for sensitive species or environments