The Fluval 307 External Aquarium Canister Filter is a powerful, energy-efficient filtration system designed for freshwater and marine aquariums between 90 and 330 litres. Combining generous filter media capacity with quiet operation and straightforward maintenance, it provides reliable filtration while keeping equipment neatly outside the aquarium.
Part of Fluval’s advanced 07 Series, the 307 incorporates eTEC technology to deliver efficient water circulation with low energy consumption. Its multi-stage filtration system helps remove suspended debris, supports beneficial bacteria and maintains clear, healthy aquarium water.
With a maximum pump output of 1,150 litres per hour and a spacious 7.3-litre canister, the Fluval 307 is an excellent choice for medium to larger aquariums requiring dependable filtration.
Fluval 307 External Aquarium Canister Filter – Key Features
Suitable for 90–330 litre aquariums – ideal for medium to larger aquarium setups.
1,150 LPH maximum pump output – provides powerful water circulation.
Low energy consumption – efficient filtration with minimal running costs.
Multi-stage filtration – combines mechanical, biological and chemical filtration.
Generous media capacity – 3.1 litres of basket space for customisable filter media.
Quiet operation – improved motor engineering and vibration-dampening feet reduce noise.
Easy maintenance – AquaStop valves, Lift-Lock clamps and removable media baskets simplify cleaning.
Filter media included – supplied with essential media to get started.
Powerful Multi-Stage Aquarium Filtration
The Fluval 307 uses several filtration stages to help maintain a clean and healthy aquarium environment.
Mechanical filtration removes suspended particles, uneaten food and fish waste before they accumulate throughout the aquarium. A large vertical pre-filter captures much of this debris before water reaches the main media baskets, helping to reduce clogging.
Biological filtration provides surfaces for beneficial bacteria that convert harmful ammonia and nitrite into less harmful nitrate. The generous media capacity of the 307 allows a substantial biological filtration system to develop as the aquarium matures.
Chemical filtration uses activated carbon to help remove certain dissolved impurities, odours and discolouration from aquarium water.
The removable media baskets can also be customised with alternative filtration materials to suit different aquarium requirements.
Quiet and Energy-Efficient Performance
Aquarium filters operate continuously, making energy consumption and noise levels important considerations.
Fluval’s eTEC engineering combines an efficient motor, precision-designed internal components and vibration-reducing rubber feet to deliver dependable performance with minimal disturbance.
The 307 provides a maximum pump output of 1,150 LPH while consuming approximately 15–16 watts, depending on the electrical specification.
Its quiet operation makes it particularly suitable for aquariums positioned in living rooms and other occupied spaces.
Designed for Easy Maintenance
Regular filter maintenance is essential for maintaining good water quality, and the Fluval 307 includes several features designed to make cleaning easier.
The AquaStop valve allows the hoses to be disconnected without removing the aquarium pipework.
Dual Lift-Lock clamps provide quick access to the motor head, while the EZ-Lift media baskets allow filtration materials to be removed conveniently for inspection and cleaning.
An improved manual priming mechanism also helps simplify initial installation and restarting after maintenance.
When cleaning biological filter media, rinse it gently in water removed from the aquarium rather than untreated tap water. This helps preserve the beneficial bacteria responsible for biological filtration.
Is the Fluval 307 Canister Filter Suitable for Your Aquarium?
Designed for aquariums between 90 and 330 litres, the Fluval 307 provides an excellent balance between filtration capacity, water circulation and running costs.
It is particularly suitable for:
Tropical community aquariums
Planted freshwater aquariums
Appropriately stocked coldwater aquariums
Suitable marine aquariums requiring additional mechanical and biological filtration
For heavily stocked aquariums, messy fish or systems approaching the upper end of its recommended capacity, a larger filter may provide additional filtration capacity.
What’s Included?
The Fluval 307 is supplied with essential filtration components and filter media, including:
Bio-Foam and Bio-Foam Max
Bio-Foam+
Fluval BIOMAX biological media
Quick-Clear polishing media
Activated carbon
Removable filter media baskets
AquaStop valve assembly
Ribbed hosing
Intake pipe and strainer
Outlet fittings and aquarium rim connectors
This provides the essential equipment needed to install the filter and begin establishing biological filtration.
Why Choose the Fluval 307 External Filter?
The Fluval 307 offers an excellent combination of powerful filtration, generous media capacity and straightforward maintenance.
Its larger filtration chambers provide additional flexibility for aquarists who want to customise their filter media, while the external design leaves valuable space inside the aquarium for fish, plants and decorations.
For medium to larger aquariums requiring dependable filtration without excessive noise or running costs, the Fluval 307 is a practical and versatile choice.
If you have any questions about the Fluval 307 External Aquarium Canister Filter and whether it’s the right filter for your pond, please contact us and a member of our friendly store team will be more than happy to answer all of your questions
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