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Fluval

Fluval T300 Heater

Fluval T300 Heater

Regular price £37.99
Regular price Sale price £37.99
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The Fluval T Series T300 is a fully electronic, submersible aquarium heater with advanced features for accurate temperature control and safety. It is the largest model in the T Series line, designed for use in both freshwater and saltwater aquariums up to 300 liters (approximately 80 US gallons). 
Features and specifications
Capacity: 300 watts of power, ideal for aquariums up to 300 liters or 80 US gallons.
Electronic thermostat: Advanced electronic sensors provide superior accuracy and help maintain a consistent water temperature with minimal fluctuation. The thermostat offers 24/7 monitoring to prevent large, unsafe temperature swings.
Visual heating indicator: A 360° light ring at the top of the unit clearly displays the heater's status from any angle.
Blue light: Indicates the heater is in standby mode and the desired temperature has been reached.
Red light: Indicates the heater is actively heating the water.
Temperature control: A large-grip dial allows for easy manual adjustment of the temperature. The temperature range is 22–32°C (72–90°F).
Safety features:
Auto shut-off: The heater has an integrated shut-off feature that automatically cuts power if the water level is too low, preventing it from overheating.
Protective guard: A durable heater guard protects the glass against breakage and also prevents accidental contact.
Installation and positioning: The T300 is fully submersible and can be mounted vertically or horizontally inside the aquarium with the included suction cups and brackets.
Dimensions: Approximately 35.5 cm (14 inches) long, according to Fluval Aquatics. 


  • Capacity: 300 watts of power, ideal for aquariums up to 300 liters or 80 US gallons.
  • Electronic thermostat: Advanced electronic sensors provide superior accuracy and help maintain a consistent water temperature with minimal fluctuation. The thermostat offers 24/7 monitoring to prevent large, unsafe temperature swings.
  • Visual heating indicator: A 360° light ring at the top of the unit clearly displays the heater's status from any angle.
    • Blue light: Indicates the heater is in standby mode and the desired temperature has been reached.
    • Red light: Indicates the heater is actively heating the water.
  • Temperature control: A large-grip dial allows for easy manual adjustment of the temperature. The temperature range is 22–32°C (72–90°F).
  • Safety features:
    • Auto shut-off: The heater has an integrated shut-off feature that automatically cuts power if the water level is too low, preventing it from overheating.
    • Protective guard: A durable heater guard protects the glass against breakage and also prevents accidental contact.
  • Installation and positioning: The T300 is fully submersible and can be mounted vertically or horizontally inside the aquarium with the included suction cups and brackets.
  • Dimensions: Approximately 35.5 cm (14 inches) long, according to Fluval Aquatics.
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