Fluval P Series Submersible Aquarium Heater 10W / 25W
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Product Overview
Fluval P Series heaters are compact, fully submersible aquarium heaters designed for freshwater and saltwater nano aquariums. Each heater is preset to maintain a stable tropical water temperature of approximately 24-26°C, with no manual temperature adjustment required.
The strong shatterproof polymer casing helps protect both the heater and aquarium inhabitants, while the slim waterproof design allows flexible positioning inside the tank. An LED running lamp illuminates when the heater is operating.
Available Models
- P10 – 10W, for aquariums up to 10 litres / 3 US gallons
- P25 – 25W, for aquariums up to 25 litres / 6 US gallons
Key Features
- Fully submersible aquarium heater
- Preset to maintain approximately 24-26°C
- No manual temperature adjustment required
- Strong shatterproof polymer construction
- Suitable for freshwater and saltwater aquariums
- LED running lamp indicates when the heater is operating
- Secure suction-cup mounting
- Compact design ideal for nano aquariums
Important: Heater performance depends on room temperature. Fluval recommends using a higher wattage heater if the room temperature is more than approximately 8°C below the target aquarium temperature.

£16.99