Details
- Easily adjusts temperature from 64° F to 93.2 °F.
- Perfect for marine and freshwater tanks.
- Easy and safe to recalibrate (±35 °F).
- Heater is watertight and completely submersible.
- Features an automatic dry run shut-off.
Eheim’s Jager Aquarium Thermostat Heater is a stylish and innovative way to keep your finny friend’s tank in perfect shape! Simply hang the heating rod in your aquarium and experience precision temperature control wherever you need it. This heater features a jacket crafted from special laboratory glass which ensures even heat emission while doubling as a heat shield. Plus, with 9 sizes to choose from, there’s a perfect Jager Thermostat Heater for any aquatic arrangement—whether you’re an enthusiast just starting out with a 20 liter tank, or a professional maintaining a 1000 liter aquarium.
Specifications
| Item Number | 130931 |
|---|---|
| Dimensions | 13.6 x 1.4 x 0.01 inches |
| Aquarium Type | Freshwater, Saltwater |
| Fish Type | Tropical Freshwater, Betta, Cichlid, Goldfish, Marine Fish |
| Material | Plastic |
Instructions
Installation Instructions:
- Check device for damage.
- Remove transit protection.
- Fix suction cups to double suction cup holder and clip onto heater (not near the heating spiral).
- Mount thermostatic heater with double suction cup holder vertically in the aquarium, fixing it in a place where water flow is brisk (filter outlets/vents).
- Set temperature.
- Plug into electrical outlet.
Setting temperature
- Turn the temperature selector ring to the desired temperature.
- Monitor the aquarium water temperature using an accurate thermometer for at least 24 hours and make any necessary adjustments to compensate for calibration errors.
- You should periodically monitor your aquarium water temperature with an accurate thermometer (Red light = heater in operation).
Note: The temperature selector ring should only be used as a guide. Always use an accurate thermometer for water temperature measurement.
Recalibration
If, after a day or two in operation the setting scale does not correspond to the water temperature, refer to the following procedure to recalibrate the heater:
- Switch off the heater and unplug it from the electrical outlet.
- Measure the water temperature with an accurate thermometer.
- Turn indicator arrow (red) point to the measured temperature.
- Set the desired tank temperature with the temperature selector ring (blue).
Size
| Watts | Manufacturer Recommended Aquarium Size | Heater Length |
|---|---|---|
| 50 | 7-16 gallons | 9” |
| 75 | 16-26 gallons | 10” |









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