Fluval FX6 is a high performance canister filter with many outstanding features designed to make aquarium fish keeping easier and more convenient than ever. This super capacity yet compact canister filter has a pump output of 925 gallons of water and has a filter circulation of 563 GPH which both work to produce cleaner and healthier results. Filtering material can easily be placed in a removable stack of media baskets which is at the heart of Fluval’s multistage filtration. The baskets are precision-engineered to eliminate water by-pass, making filtration more efficient. The baskets can hold a total of 5.9 liters of media and can be stacked in the precise combination of layers that will work best for your aquarium. Each one is lined with a foam insert for effective mechanical pre-filtering. Instant-release T-handles let you lift and separate the baskets quickly and easily, making routine maintenance simpler. Fluval FX6 also features Smart Pump Technology, which provides optimal filter performance. This advanced technological feature employs an electronic circuit board that continually monitors the pump. Impeller speed and force are constantly measured to ensure powerful output and energy efficiency. It also manages the filter’s self-starting feature and evacuates air that may enter or build up within the filtration system. On a 12-hour cycle, the pump will pause and allow trapped air to escape, ensuring the best filtration efficiency at all times. Only 21″ in height, Fluval FX6 fits under most aquariums.


Super capacity yet compact canister filter
FX6 is Fluval’s next generation filter workhorse, with all the power and reliability that Fluval FX filters are known for–plus more. FX6 has an amazing range of advanced features, all designed to make fishkeeping so much easier and more convenient.
High Capacity Canister
The FX6’s compact, super capacity tank processes and re-circulates fully 563 US gallons of water every hour and accommodates the stack of media baskets with their capacity of up to 1.5 gallons of media. Yet this enormous-capacity tank is short enough (21 in) to fit under most large aquariums.
Quite Operations.
Precise-engineered Bearing minimizes impeller vibration and cover reduces noise.
Fluval FX6 Details
Multi-directional Output Nozzle – Twin-output nozzle can be adjusted to create specific water flow to reach all corners of the aquarium.
Electronic Circuit Board Continuous monitoring of impeller speed and pump power ensures optimum output and efficient energy usage. Motor will turn itself off if impeller is impeded.
Maintenance Reminders Monthly Indicator Dials allow you to remember the date of your last filter maintenance and water change.
AquaStop Valves
The AquaStop valve makes maintenance easy by allowing you to stop the water flow with an easy 90-degree turn of the valve lever. This means you can separate the hosing from the filter in one step. The valve lever can also be used to regulate water flow with no harm to the motor or its components. Two valves are provided: one for the intake, one for the output.
*The FX6 helps meet the desired objectives of any aquarium. For the best performance, the Fluval FX6 Filter should be placed completely beneath the aquarium.

Self-Priming Instant-Start System
With the FX6, there’s never any need for manual siphoning. As soon as you plug the filter in, the canister fills with water from your aquarium. It pumps for 1 minute, pauses for 2 minutes to evacuate air from the system, then immediately begins the filtering process.
Purge Valve
The FX6 canister features a purge valve drain at its base. This makes it possible for you to empty the canister for maintenance before moving it.
Multi-Directional Output Nozzle
The flared spout of the adjustable output nozzle sends multiple streams of purified water toward all corners of the aquarium, creating currents that agitate the water to break down wastes and help hold them in suspension until they can be drawn into the filter by the intake strainer.
Clog-Proof Intake Strainer
The wide, rounded mouth of the FX6 intake strainer is shaped to siphon water quickly. Covered by a fine screen that’s beveled to repel debris, it is virtually clog-proof, so there is never a build-up of solids that could impede water flow.
High Capacity Canister
The Fluval FX6’s superior performance and capability are backed by Fluval’s well-earned reputation for the best fish and aquarium care. Hagen Aquatic Research Station certification is your assurance of the most up-to-date and reliable research in aqua-care science. The use of the Fluval FX6 will help provide your fish with the aquatic home they deserve. .
*The FX6 helps meet the desired objectives of any aquarium. For the best performance, the Fluval FX6 Filter should be placed completely beneath the aquarium.
Model |
![]() Fluval 106 |
![]() Fluval 206 |
![]() Fluval 306 |
![]() Fluval 406 |
![]() Fluval G6 |
![]() Fluval Fx6 |
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Aquarium Capacity | 25 US Gallons | 45 US Gallons | 70 US Gallons | 100 US Gallons | 160 US Gallons | 400 US Gallons |
Dimensions | 15 X 6 X 8 inches | 18 X 7 X 8 inches | 18 X 7 X 10 inches | 20 X 8 X 10 inches | 10 x 9 x 13 inches | 16 x 16 x 21 inches |
Pump Output | 145 US Gal/h | 206 US Gal/h | 303 US Gal/h | 383 US Gal/h | 650 US Gal/h | 925 US Gal/h |
Filter Circulation | 95 US Gal/h | 121 US Gal/h | 206 US Gal/h | 245 US Gal/h | 265 US Gal/h | 538 US Gal/h |
Head Height (max.) | 4.8 ft | 4.8 ft | 5.6 ft | 7.5 ft | 4.8 ft | 7.6 ft |
Media Capacity | 3.2 Liters | 4.6 Liters | 6.6 Liters | 8.5 Liters | 9.5 Liters | 11.5 Liters |
Wattage | 120V/60Hz: 10W | 120V/60Hz: 10W | 120V/60Hz: 16W | 120V/60Hz: 23W | 120V/60Hz: 27W | 120V/60Hz: 43W |
Fluval Media

Fluval Carbon, 100-gram Nylon Bags – 3-Pack
Fluval Carbon Filter Media Insert is capable of adsorbing most liquified impurities and dyes present in aquarium water. It does not contain phosphates and will not change the pH of the aquarium water.
