Eheim Jäger 300W – Fully Submersible Aquarium Heater with Thermo Control

Eheim Jäger 300W – Fully Submersible Aquarium Heater with Thermo Control

The Eheim Jäger 300W Aquarium Heater is a trusted, high-performance heater designed to provide precise and consistent temperature control in large freshwater or saltwater aquariums. Featuring laboratory-grade glass construction and Eheim’s TruTemp adjustable calibration system, this heater ensures reliable warmth and safety for your aquatic life.

Ideal for tanks up to 264 gallons, the Jäger 300W offers a fully submersible, shatter-resistant design and an on/off indicator light for easy monitoring. Its precision thermostat maintains stable water temperatures between 65°F and 93°F (18°C–34°C), keeping your fish comfortable year-round.

🔥 Key Features:

• 300-watt fully submersible heater for tanks up to 264 gallons
• Precision thermostat adjustable from 65°F–93°F
• TruTemp calibration for exact temperature accuracy
• Shatterproof, laboratory-grade glass construction
• Thermo safety control—automatically shuts off when removed from water
• Suitable for both freshwater and marine aquariums
• 📦 Product Details:
• Power: 300 watts
• Tank Size: Up to 264 gallons
• Temperature Range: 65°–93°F (18°–34°C)
• Cord Length: 6 ft
• Mounting: Suction cup bracket included
• Brand: Eheim Germany

💡 Pro Tip: Place your Jäger heater near a filter outlet or water flow area to ensure even heat distribution throughout the aquarium.

Frequently Asked Questions (FAQ):

Q: Is the Eheim Jäger 300W fully submersible?
A: Yes—this model is 100% submersible and safe for both freshwater and marine setups.

Q: What size tank does it heat?
A: It’s ideal for aquariums up to 264 gallons depending on room temperature and setup.

Q: Does it have automatic shut-off protection?
A: Yes—its Thermo Safety Control automatically turns off if removed from water.

Q: Can I recalibrate the temperature?
A: Yes—the TruTemp system allows fine-tuning to match your thermometer exactly.

Q: Is it durable?
A: The high-quality glass is shock-resistant, shatterproof, and built for long-term reliability.