Eheim Jager 75W Submersible Aquarium Heater

The Eheim Jager 75W Submersible Aquarium Heater is a versatile workhorse for small-to-medium tanks in the 16–26 gallon range. With its adjustable TruTemp dial, shatterproof glass, and Thermo Safety Control, it keeps tropical fish and plants in a stable, healthy environment — fully submersible in freshwater or marine setups.

Why aquarists trust the Jager

• 75 watts of reliable heat: Great for aquariums around 16–26 gallons
• Precise TruTemp dial: Adjustable from 65–93°F (18–34°C) with a calibratable dial for spot-on accuracy
• Fully submersible: Mount it horizontally or vertically, freshwater or saltwater
• Shatterproof glass: Lab-grade, durable construction
• Thermo Safety Control: Automatic shutoff protects against accidental dry running

Setup & safety tips

• Place the heater near good water flow (by a filter outlet) so heat spreads evenly.
• After plugging in or before unplugging, wait ~15 minutes for the glass to adjust to water temperature.
• Always verify the actual tank temperature with a separate thermometer.

Not sure on sizing? Need a different size? Compare the 50W and 100W Jager heaters. Browse all aquarium heaters or the full Eheim equipment lineup.

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