The Fluval G3 Fine Pre-Filter Cartridge is designed for daily use with marine aquariums where suspended debris is minimal or it can be used as a polishing cartridge for standard or fresh water aquariums. The fine mesh will trap debris 75 microns or larger for unparalleled mechanical filtering results. Debris remains caught between each pleat until it is removed and rinsed. The effectiveness of the Fluval G3 pre-filtration process means that less solid waste is solubilised in the aquarium water for less waste accumulation.

The Fluval G3 Fine Pre-Filter Cartridge is designed for daily use with marine aquariums where suspended debris is minimal or it can be used as a polishing cartridge for standard or fresh water aquariums. The fine mesh will trap debris 75 microns or larger for unparalleled mechanical filtering results. Debris remains caught between each pleat until it is removed and rinsed. The effectiveness of the Fluval G3 pre-filtration process means that less solid waste is solubilised in the aquarium water for less waste accumulation.
Fluval G-Nodes Biological Filtration Media
Fluval G-Nodes Biological Filtration Media feature a complex pore system where beneficial bacterial will thrive. With more capacity and a shape that enables them to be compacted tightly within the G filter baskets, the G-Nodes enhance biological nitrification, and help reduce ammonia and nitrite.

The Perfect Blend of Beauty, Brains, And Brawn.
The Fluval G6 redefines the filtration category by offering a unique combination of aesthetics, monitoring capabilities and performance features.the G Series is a stunningly attractive, high-tech marvel that features a stylish cubic design
HydroTech™
The Fluval G Series is equipped with HydroTech, ™ an intelligent monitoring system. Though internal sensory modules, the HydroTech™ microprocessor stores and communicates real time filter performance, water parameters and filter cleaning intervals. The flow rate is permanently highlighted on the screen as well as aquarium water temperature and conductivity. To let you know when filter maintenance is required, scheduling is also displayed.
Drive Pump
The Fluval G is powered by an advanced three component drive system, providing power, long term reliability with virtually zero noise and high performance. The powerful yet compact synchronized dual drive coil is controlled by one of two Fluval G microprocessors which continuously monitor and adjust the start speed, impeller direction, power usage and performance.
Filter Casing
The inner filter chamber is made from fiberglass re-enforced polymer, designed to withstand pressures of 15PSI, far outweighing the normal operational standards and resulting in a leak-proof and noise reducing casing.

AquaStop
With its proprietary technology the AquaStop system makes maintenance easy, allowing you to stop the water flow by simply bringing the AquaStop valve lever into an upright position.By lifting the AquaStop release lever, the complete assembly can be conveniently removed without separating the hosing
Lever Canister ClampsAquaStop
Chrome plated cast ZAMA levers provide a strong and secure seal and do not corrode or oxidize even when in contact with salt water. They are made of Zamak alloy which provides superior strength and dimensional stability over time.
Primer
With the Fluval G, there’s never a need for manual siphoning. After set up on the aquarium and before plugging the unit in, just push the easy priming button all the way down 2-3 times in fast sequence. As water is drawn through the intake hosing, it fills the canister pushing air out of its way.
Telescopic Intake and Strainer / Rim attachment / Spray Nozzles or Spray Bars
Water is drawn through the multi-lamella intake strainer, designed to repel debris and resist the build-up of solids that would normally impede water flow. Additional intake strainers can be attached to extend the intake screen surface.
Model |
![]() Fluval G3 |
![]() Fluval G6 |
---|---|---|
Aquarium Capacity | 40-80 US Gallons | 80-160 US Gallons |
Dimensions | 10 x 9 x 10 inches | 10 x 9 x 13 inches |
Pump Output | 340 US Gal/h | 650 US Gal/h |
Filter Circulation | 185 US Gal/h | 265 US Gal/h |
Head Height (max.) | 6.1 ft | 7.6 ft |
Media Capacity | 2 Baskets | 3 Baskets |
Wattage | 120V/60Hz: 18W | 120V/60Hz: 27W |
G Series Filtration & Media

Fluval G6 Phosphate Cartridge
The Fluval G3 Phosphate Cartridge is for use with the Fluval G3 Advanced Filter and will rapidly remove up to 2200 mg of phosphate ion from marine or fresh water aquariums.
