Best Aquarium Heaters · head-to-head

Eheim Jager 150W vs Cobalt Aquatics Neo-Therm 100W

A sourced, side-by-side comparison. Eheim Jager 150W is cheaper at $39.99. Every spec and price links to its source.

Which is better: the Eheim Jager 150W or Cobalt Aquatics Neo-Therm 100W?

On the specs we track, they're closely matched. The Eheim Jager 150W is the cheaper at $39.99.

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Full spec sheet

marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.

Spec Eheim Jager 150W Cobalt Aquatics Neo-Therm 100W
US price $39.99 $49.12
BrandEheimCobalt Aquatics
Released
Wattage (W) 150 100
Tank size range gal 53-79 gal up to 29 gal
Adjustable thermostat Yes Yes
Material glass plastic
Fully submersible Yes Yes
Temperature accuracy f ±0.5°F ±0.5°F
Shatterproof guard No Yes
External controller No No

Sources — Eheim Jager 150W: aquacave.com (verified 2026-08-16). Cobalt Aquatics Neo-Therm 100W: bulkreefsupply.com (verified 2026-08-16).

What's the difference between the Eheim Jager 150W and Cobalt Aquatics Neo-Therm 100W?

Where the two actually differ on the specs we track (4 of 8). Matching specs are omitted.

  • Wattage (W): Eheim Jager 150W 150 vs Cobalt Aquatics Neo-Therm 100W 100
  • Tank size range gal: Eheim Jager 150W 53-79 gal vs Cobalt Aquatics Neo-Therm 100W up to 29 gal
  • Material: Eheim Jager 150W glass vs Cobalt Aquatics Neo-Therm 100W plastic
  • Shatterproof guard: Eheim Jager 150W false vs Cobalt Aquatics Neo-Therm 100W true

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