
Fluval E 300 Watt Electronic Heater
- Continuously monitors and displays aquarium water temperature in real time
- Intelligent digital microprocessor monitoring system with dual temperature sensors
- Ensures the safety and well-being of your aquarium inhabitants
- Precision temperature control allows settings in 0.5-degree increments
- Integrated fish guard provides advanced protection
Price & Buy Timing
Currently $54.99 — the 90-day average is $47.90.
All-time low: $31.80 on Thu Oct 09 (from 183 price checks).
Mubboo Value Score: 4.3/10
How it stacks up
Rated 4.3/5 — better than 30% of 53 Aquarium Heaters we track. Premium-tier pricing at $54.99.
Head-to-Head vs Category Leader
| Fluval | hygger (Leader) | |
|---|---|---|
| Price | $54.99 | $33.99 |
| Rating | 4.3/5 | 5.0/5 |
| Reviews | 6,170 | 13 |
| Mubboo Score | 4.3/10 | 4.3/10 |
The category leader hygger 300W Submersible Aquarium Heater with Di offers better ratings at $33.99.
Quick Specs
- Color
- Blue
- Voltage
- 230 Volts
- Wattage
- 300 watts
- Mount Type
- Slim mounting bracket
- Style Name
- E300
- Unit Count
- 1.0 Count
- Heat Output
- 300 Watts
- Is Electric
- Yes
What reviewers say
Synthesized from 40 reviews · 100% verified purchases.
Ensure adequate water circulation to prevent flow errors, use a separate thermometer to verify tank temperature, and consider adjustable models if you need to treat diseases with higher heat.
Rating reliability
About Fluval
- 35 products in our database
- Average rating: 4.5/5 across all products
- Price range: $4.48 – $699.98
- Categories: Aquarium Filters, Aquarium Heaters, Aquariums, food-pet
Other Aquarium Heaters




Frequently Asked Questions
Is the Fluval Fluval E 300 Watt Electronic Heater worth buying in 2026?
It earns a Mubboo Score of 4.3/10, with a 4.3/5 rating from 6,170 reviews — better than 30% of Aquarium Heaters we track.
How much does the Fluval Fluval E 300 Watt Electronic Heater cost?
It is currently $54.99. The 90-day average is $47.90 and the all-time low we recorded is $31.80.
How does it compare to the top-rated Aquarium Heaters?
The category leader hygger 300W Submersible Aquarium Heater with Di offers better ratings at $33.99.
Sources & References
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