Heaters · Eheim

Eheim Jager TruTemp 200W Aquarium Heater fit check

Quick answer

Eheim Jager TruTemp 200W Aquarium Heater is a 200W glass heater adjustable from 65 to 93F. ReefCrafter's 2.5-5 watts-per-gallon band puts it at roughly 40-80 gallons of display water, before room temperature and redundancy choices. At this wattage a controller or a split two-heater setup limits the damage of a stuck-on failure.

Eheim Jager TruTemp 200W Aquarium Heater: fits roughly 40-75 gallon systems. Specs, compatibility math, sizing risks, and alternatives before you buy.

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Who it is for

Good fit for

✓ 40-75 gallon systems, per the catalog fit range.
✓ Roughly 40-80 gallons of display water at 2.5-5 W per gallon.

Not a fit for

✕ Tanks under about 40 gallons; it is sized above them.
✕ Systems over about 75 gallons without adding capacity elsewhere.
✕ Running alone on a large tank without a controller; split heat or add a controller.

Listed features

submersible glass
TruTemp calibration
range 65-93F

Compatibility math

Safe wattage band

2.5 <= total watts / display gallons <= 5.0

Example: 200W is usually a planning fit for roughly 40-80 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.

Professional fit context

Check wattage, controller, redundancy, tank size, and whether two smaller heaters are safer.
Eheim Jager TruTemp 200W Aquarium Heater fits roughly 40-75 gallon systems; confirm that range against the final display volume, sump volume, and livestock plan.

Alternatives to compare

Bulk Reef Supply BRS 200W Titanium Aquarium Heater System WiFi
Same 200 W; compare format and features instead.
Cobalt Neo-Therm 200W Submersible Heater
Same 200 W; compare format and features instead.
Bulk Reef Supply BRS Titanium Heater Element 200W (no controller)
Same 200 W; compare format and features instead.

Full spec snapshot

Category: Heaters
Build tier: Budget
Estimated price: $43
Tank fit range: fits roughly 40-75 gallon systems
Format: Glass Heater
Heater wattage: 200 W

Questions

What size tank is a 200W heater like the Eheim Jager TruTemp 200W Aquarium Heater for?

ReefCrafter's 2.5-5 W per gallon band puts 200W at about 40-80 gallons. Cold rooms push toward the smaller end; tanks over 50 gallons are safer with two smaller heaters.

What tank size is the Eheim Jager TruTemp 200W Aquarium Heater for?

ReefCrafter's catalog fit range for it is 40-75 gallon systems. Confirm that against your final display volume, sump volume, and livestock plan rather than the box label alone.

What should I compare the Eheim Jager TruTemp 200W Aquarium Heater against?

Bulk Reef Supply BRS 200W Titanium Aquarium Heater System WiFi (Same 200 W; compare format and features instead); Cobalt Neo-Therm 200W Submersible Heater (Same 200 W; compare format and features instead); Bulk Reef Supply BRS Titanium Heater Element 200W (no controller) (Same 200 W; compare format and features instead).