Fluval
Fluval E300
$72.99
Best Aquarium Heaters · head-to-head
A sourced, side-by-side comparison. Eheim Jager 150W is cheaper at $39.99. Every spec and price links to its source.
Fluval
$72.99
Eheim
$39.99Cheaper
On the specs we track, they're closely matched. The Eheim Jager 150W is the cheaper at $39.99.
As an Amazon Associate we earn from qualifying purchases. Prices verified at capture; live price may differ.
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | | |
|---|---|---|
| US price | $72.99 | $39.99 |
| Brand | Fluval | Eheim |
| Released | — | — |
| Wattage (W) | 300 | 150 |
| Tank size range gal | up to 100 gal | 53-79 gal |
| Adjustable thermostat | Yes | Yes |
| Material | glass | glass |
| Fully submersible | Yes | Yes |
| Temperature accuracy f | — | ±0.5°F |
| Shatterproof guard | Yes | No |
| External controller | No | No |
Sources — Fluval E300: aquacave.com (verified 2026-08-16). Eheim Jager 150W: aquacave.com (verified 2026-08-16).
Where the two actually differ on the specs we track (3 of 8). Matching specs are omitted.