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£19.99Fluval E300 Advanced Electronic Aquarium Heater 300W – Up to 375L – EU Plug
Availability: Out of stock · seller last confirmed 11 Sep 2026 · not shown in site search while out of stock
Maintain a controlled aquarium temperature with the Fluval E300 Advanced Electronic Heater. Designed for aquariums up to 375 litres, this fully submersible 300W heater features electronic temperature control, an integrated digital display and a convenient adjustment lever.
PLEASE NOTE – This product is supplied with an EU plug and will require a suitable UK plug adaptor for use in the United Kingdom.
Pack Contains
1 x Fluval E300 Advanced Electronic Aquarium Heater
Mounting bracket with suction cups
Key Features
300W electronic aquarium heater
Suitable for aquariums up to 375 litres / 100 US gallons
Integrated electronic temperature display
VueTech temperature alert system
Temperature can be adjusted in 0.5°C increments
Fully submersible waterproof design
Independent mounting bracket
Heater can be separated from the bracket for convenient adjustment
Suitable for positioning inside the aquarium
Supplied with an EU plug
Product Details
Brand: Fluval
Product: E300 Advanced Electronic Heater
Model: E300 / A774
Power: 300W
Aquarium Capacity: Up to 375 litres / 100 US gallons
Dimensions: Approximately 35.5cm high × 5cm wide × 2.8cm deep
Installation: Fully submersible
Plug Type: EU plug
Quantity: 1 heater
Directions / Usage
Secure the mounting bracket inside the aquarium using the suction cups and position the heater fully beneath the water. Use the upper adjustment lever to select the required temperature in 0.5°C increments. Follow all installation, positioning and safety instructions supplied with the heater before connecting it to the electricity supply.
Warnings
Supplied with an EU plug. A suitable UK plug adaptor is required for use in the United Kingdom.
Fully submerge and install the heater according to the supplied instructions before switching it on.
Disconnect the heater from the electricity supply before removing it from the aquarium or carrying out maintenance.
Use only with an aquarium of a suitable capacity.
Frequently Asked Questions
What size aquarium is the Fluval E300 suitable for?
It is designed for aquariums with a capacity of up to 375 litres, equivalent to approximately 100 US gallons.
What power rating does this heater have?
The Fluval E300 has a power rating of 300W.
Is the heater fully submersible?
Yes. Its waterproof design allows it to be positioned fully inside the aquarium.
How is the temperature adjusted?
The upper control lever allows the selected temperature to be adjusted in increments of 0.5°C.
Does it include a temperature display?
Yes. The heater features an integrated electronic temperature display and VueTech temperature alert system.
Can the heater be removed without taking out the mounting bracket?
Yes. The heater can be separated from its independent mounting bracket for convenient adjustment or maintenance.
Does this heater have a UK plug?
No. This version is supplied with an EU plug and requires a suitable UK plug adaptor for use in the United Kingdom.
The Fluval E300 combines electronic temperature control, a clear digital display and fully submersible installation, making it a practical heating solution for larger home aquariums.
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