Fluval E300w Advanced Electronic Heater – 375 L (100 US gal) – 300 W – A774
MRP ₹6,999.00 Inclusive of All taxes
The Fluval E300 Advanced Electronic Heater is a 300W aquarium heater designed for aquariums up to 375 L (100 US Gal). It uses dual-sensor VueTech® technology for continuous temperature monitoring, precise 0.5°C adjustments and a clear digital display. Suitable for both freshwater and saltwater aquariums, it provides reliable and precise temperature control.
Key Features:
- 300W Heating Power – Suitable for aquariums up to 375 L / 100 US Gal.
- VueTech® Technology – Dual sensors continuously monitor water temperature with visual alerts.
- Precise Temperature Control – Adjustable in 0.5°C increments with digital Celsius/Fahrenheit display.
- Integrated Fish Guard – Helps protect fish from direct contact with the heating element.
Fluval E300 Advanced Electronic Heater – 300W
Maintaining a stable water temperature is essential for a healthy aquarium. The Fluval E300 Advanced Electronic Heater is a 300W electronic aquarium heater designed for aquariums up to 375 L (100 US Gal), providing precise temperature control and real-time temperature monitoring.
Powered by dual-sensor VueTech® microprocessor technology, the Fluval E300 continuously monitors the aquarium water temperature and displays the reading digitally. The VueTech® system also provides an easy-to-understand visual alert by changing the display colour when the water temperature moves outside the selected range.
Key Features
- 300W aquarium heater designed for aquariums up to 375 L (100 US Gal)
- Dual-sensor VueTech® technology for accurate, real-time temperature monitoring
- Digital temperature display with Celsius or Fahrenheit readings
- Precision temperature control with adjustments in 0.5°C increments
- Colour-coded VueTech® alerts help identify low, safe and high temperature conditions
- Integrated fish guard helps protect fish from direct contact with the heater
- Slim mounting bracket for convenient installation
- Suitable for freshwater and saltwater aquariums
- Fully submersible design for use inside the aquarium
Precise Temperature Control
The Fluval E300 allows you to set your desired aquarium temperature with precision in 0.5°C increments. Its digital display makes it easy to monitor the water temperature at a glance, while the dual-sensor system provides continuous temperature readings.
VueTech® Visual Alert System
One of the key features of the Fluval E300 is its VueTech® colour-changing display. The display changes colour when the water temperature varies from the set temperature, helping aquarists quickly identify temperature fluctuations.
Designed for Aquarium Safety
The integrated fish guard provides an added layer of protection by helping prevent fish and aquarium décor from coming into direct contact with the heater element. The independent mounting bracket also allows the heater to be positioned securely inside the aquarium.
Suitable for Freshwater & Saltwater Aquariums
The Fluval E300 is suitable for both freshwater and saltwater aquarium setups, making it a versatile heating solution for larger home aquariums.
Specifications
- Model: Fluval E300
- Item Number: A774
- Wattage: 300W
- Aquarium Capacity: Up to 375 L / 100 US Gal
- Dimensions: 5 × 2.8 × 35.5 cm
- Temperature Adjustment: 0.5°C increments
- Display: Digital, Celsius/Fahrenheit
Specs
| MODEL Item # |
E50 A771 |
E100 A772 |
E200 A773 |
E300 A774 |
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| UPC | 015561107716 | 015561107723 | 015561107730 | 015561107747 |
| Aquarium Capacity | 15 US Gal (50 L) |
30 US Gal (100 L) |
65 US Gal (250 L) |
100 US Gal (375 L) |
| Wattage | 50 W | 100 W | 200 W | 300 W |
| Dimensions (L x W x H) |
2 x 1.125 x 9.75″ (5.0 x 2.8 x 24.7 cm) |
2 x 1.125 x 11.75″ (5.0 x 2.8 x 29.8 cm) |
2 x 1.125 x 14″ (5.0 x 2.8 x 35.5 cm) |
2 x 1.125 x 14″ (5.0 x 2.8 x 35.5 cm) |
WARRANTY
5 YEAR LIMITED WARRANTY
Fluval E Series Heaters are guaranteed against defects in material or workmanship under normal aquarium usage and service for 5 years. We offer a 5 year guarantee on all nonreplaceable parts which means that the heater will be repaired or replaced at the
manufacturer’s discretion, free of charge, when the complete heater is returned with proof of purchase and postage paid. This warranty does not apply to any heater that has been subjected to misuse, negligence, or tampering. No liability is assumed with respect to loss
or damage to livestock or personal property irrespective of the cause thereof.
Questions & Answers
Questions & Answers
How do I switch the display between Celsius and Fahrenheit?
To change between degree scales, hold the red set lever in the full left position for at least 5 seconds. When the new degree scale is displayed, you may release the lever. After a few seconds, the display will automatically return to show the water temperature.
Why does my E Series heater sometimes flash blue in the morning?
This is probably due to the fact that the water temperature has dropped by one or two degrees overnight.
What are the minimum and maximum temperature settings on E Series heaters?
The minimum temperature is 68°F / 20°C. The maximum temperature is 93°F / 34°C.



















Ani –
After using this product from last 4 months I am writing this review. Great product.
Anirban –
Good product with 99% accuracy..
Suraj kar –
Nice thermostat with lot of info and easy readability.