Heaters · Eheim
Eheim Jager TruTemp 100W Aquarium Heater fit check
Eheim Jager TruTemp 100W Aquarium Heater Heaters specs, fits roughly 20-40 gallon systems, compatibility math, risks, alternatives, and vendor-neutral buying links.
Category
Heaters
Build tier
Budget
Estimated price
$33
Tank fit range
fits roughly 20-40 gallon systems
Format
Glass Heater
Heater wattage
100 W
Compatibility math
Safe wattage band
2.5 <= total watts / display gallons <= 5.0
Example: 100W is usually a planning fit for roughly 20-40 gallons before room-temperature and redundancy choices.
ReefCrafter checks both the low-wattage failure and the oversized stuck-on failure.
Risk notes
- A single oversized heater can cook livestock faster than a beginner notices the problem.
Full spec snapshot
- Category
- Heaters
- Build tier
- Budget
- Estimated price
- $33
- Tank fit range
- fits roughly 20-40 gallon systems
- Format
- Glass Heater
- Heater wattage
- 100 W
