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    Fluval U3 Underwater Filter

    Fluval U3 Underwater Filter

    Fluval U3 Underwater Filter provides complete and efficient 3-stage filtration, including BioMax biological filtering, to create superior aquarium water quality. The U3 Filter includes practical and versatile features, making it ideal for application... more

    $46.71

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    Fluval U3 Underwater Filter Foam Pad

    Fluval U3 Underwater Filter Foam Pad

    The Fluval Foam Pad was designed specifically for the U3 filter model to captures large particles and debris for effective mechanical filtration, the crucial first stage in the filtration process. Custom fit to prevent bypass, they have a pore size... more

    $6.64

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    Fluval U3 Underwater Filter Poly/Carbon

    Fluval U3 Underwater Filter Poly/Carbon

    Fluval Poly/Carbon Cartridges features two sides for effective chemical filtration, the crucial second stage in the filtration process. The polyester filter pad side filters out fine debris and contaminants. The carbon side filters out harmful liquid... more

    $5.98

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    Fluval U3 Underwater Filter - Up to 40 gal.

    Fluval U3 Underwater Filter - Up to 40 gal.

    Bring powerful 3-stage filtration and circulation to hard-to-filter places like aquariums; terrariums and turtle tanks with the Fluval U Series Underwater Filter. This completely submersible filter features a unique 3-way flow control spray bar that... more

    $49.99

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    Fluval U3 Poly & Carbon Cartridge

    Fluval U3 Poly & Carbon Cartridge

    Replacement Poly and Carbon Filter Cartridge for Fluval U3 Underwater Filter. more

    $5.99

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    Fluval U3 Foam Pad

    Fluval U3 Foam Pad

    Fluval Filter Foam Pads provide mechanical filtration by removing waste and debris from your aquarium water. Designed to fit the Fluval U3 Underwater Filter . For more information on mechanical filtration; please read our article on Aquarium Filter... more

    $3.69

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    Fluval U3 Underwater Filter up to 40 Gal

    Fluval U3 Underwater Filter up to 40 Gal

    Fluval Underwater FilterFluval Underwater Filter with three stage filtration is ideal for use in fresh, marine or reptile environments. Stage 1 foam pad removes large particles. Stage 2 poly/carbon cartridge traps fine debris, improves water clarity... more

    $84.99 $57.42

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    Rakuten.com Shopping

    (1,000,000+)
    Fluval Plastic Body Replacement for Fluval U3 Underwater Aquarium Filter

    Fluval Plastic Body Replacement for Fluval U3 Underwater Aquarium Filter

    This body is replacement for the Fluval U3 underwater filter. Made of plastic. This product weighs 0.446-pound. Measures 10-inch length by 3-1/2-inch height by 3-1/2-inch width. more

    $12.03

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    Fluval Foam Cartridge Frame Replacement for Fluval U3 Underwater Aquarium Filter

    Fluval Foam Cartridge Frame Replacement for Fluval U3 Underwater Aquarium Filter

    This foam cartridge frame is suitable for Fluval U3 underwater aquarium filter. This product weighs 0.068-pound. Measures 9-inch length by 1-inch height by 5-inch width. more

    $9.99

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    Fluval Cover Replacement for Fluval U2/U3 Underwater Aquarium Filters

    Fluval Cover Replacement for Fluval U2/U3 Underwater Aquarium Filters

    This cover is suitable for Fluval U2 and U3 underwater filters. This product weighs 0.1-pound. Measures 2-inch length by 5-inch height by 2-inch width. more

    $6.21

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    SP Fluval Bracket Replacement for Fluval U2/U3 Underwater Aquarium Filters

    SP Fluval Bracket Replacement for Fluval U2/U3 Underwater Aquarium Filters

    This filter bracket is suitable for Fluval U2 and U3 underwater filters. This product weighs 0.136-pound. Measures 9-inch length by 3-inch height by 6-inch width. more

    $22.64

    FREE shipping

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    Rakuten.com Shopping

    (1,000,000+)
    SP Fluval Biomax Cartridge Replacement for Fluval U3 Aquarium Filter

    SP Fluval Biomax Cartridge Replacement for Fluval U3 Aquarium Filter

    This biomax cartridge is suitable for U3 underwater aquarium filter. This product weighs 0.092-pound. Measures 8-inch length by 1-inch height by 2-1/2-inch width. more

    $19.99

    FREE shipping

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    Rakuten.com Shopping

    (1,000,000+)
    Fluval U4 Underwater Filter - Up to 65 gal.

    Fluval U4 Underwater Filter - Up to 65 gal.

    Bring powerful 3-stage filtration and circulation to hard-to-filter places like aquariums; terrariums and turtle tanks with the Fluval U Series Underwater Filter. This completely submersible filter features a unique 3-way flow control spray bar that... more

    $69.99

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    Fluval Underwater Filter Bio-Max

    Fluval Underwater Filter Bio-Max

    Replacement BioMax tubular ceramic Biological Filter Media for Fluval U series Underwater Filters. Porous tubular ceramic media has extremely high surface area for beneficial bacterial growth. more

    $5.89

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    Fluval U2 Poly & Carbon Cartridge

    Fluval U2 Poly & Carbon Cartridge

    Replacement Poly and Carbon Filter Cartridge for Fluval U2 Underwater Filter. more

    $4.99

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    Fluval Underwater Filter

    Fluval Underwater Filter

    The Fluval Underwater Filter provides exceptional, three-stage filtration for unmatched water quality. It has a three-way water flow option for excellent oxygenation. The flip-top lid allows for easy replacement of the filter cartridge. Perfect for... more

    $50.99

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    Fluval WFLUVALA486 U2 Underwater Filter Foam Pad

    Fluval WFLUVALA486 U2 Underwater Filter Foam Pad

    The Fluval Foam Pad was designed specifically for the U2 filter model to captures large particles and debris for effective mechanical filtration, the crucial first stage in the filtration process- Custom fit to prevent bypass, they have a pore size... more

    $4.10

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    Fluval U3 Underwater Filter Poly/Carbon

    Fluval U3 Underwater Filter Poly/Carbon

    Fluval U3 Underwater Filter Poly/Carbon Fluval Poly/Carbon Cartridges feature two sides for effective chemical filtration, the crucial second stage in the filtration process. The polyester filter pad side filters out fine debris and contaminants. The... more

    $5.99

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    Wag.com

    (1,000+)
    Fluval U3 Underwater Filter Foam Pad (2 Pack)

    Fluval U3 Underwater Filter Foam Pad (2 Pack)

    $1.53

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    Fluval U3 Underwater Filter

    Fluval U3 Underwater Filter

    Fluval Underwater FilterFluval Underwater Filter with three stage filtration is ideal for use in fresh, marine or reptile environments. Stage 1 foam pad removes large particles. Stage 2 poly/carbon cartridge traps fine debris, improves water clarity... more

    $59.99 $44.99

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    petco.com

    (200,000+)
    Fluval U3 Underwater Filter Poly/Carbon Cartridge

    Fluval U3 Underwater Filter Poly/Carbon Cartridge

    Two sides equals twice the efficiency. The Fluval U3 Underwater Filter Poly/Carbon Cartridge features a chemical filtration, the crucial second stage in the filtration process. The polyester side of the Fluval U3 Underwater Filter Poly/Carbon Cartridge... more

    $5.99 $4.49

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    Pet Food Direct

    (10,000+)
    Fluval U3 Poly Carbon Underwater Filter Cartridge (2 Pack)

    Fluval U3 Poly Carbon Underwater Filter Cartridge (2 Pack)

    $3.19

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    Fluval U2/U3/U4 Biomax Underwater Filter

    Fluval U2/U3/U4 Biomax Underwater Filter

    This Fluval U2/U3/U4 Biomax Underwater Filter lets you optimize your aquarium's biological balance.Add this Fluval U2/U3/U4 Biomax Underwater Filter to your aquarium for optimum biological balance. The U-series stage 3 filter helps maintain a healthy... more

    $7.79

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    (300,000+)
    Hagen Fluval Underwater Filter; U3 (Use in 20 - 40 gallon)

    Hagen Fluval Underwater Filter; U3 (Use in 20 - 40 gallon)

    Filter. Filters debris and provides optimal biological filtration more

    $65.45

    FREE shipping

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    Fluval Underwater Filter, Size: U3 - Use in 20 - 40 Gallons - A475

    Fluval Underwater Filter, Size: U3 - Use in 20 - 40 Gallons - A475

    The Fluval Underwater Filter provides exceptional, three-stage filtration for unmatched water quality. It has a three-way water flow option for excellent oxygenation. The flip-top lid allows for easy replacement of the filter cartridge. Perfect for... more

    $88.99

    FREE shipping

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    Fluval Underwater Filter

    Fluval Underwater Filter

    Fluval U3 Underwater Filter The Fluval U3 Underwater Filter provides 3 stage filtration: Stage 1 foam removes large particles. Stage 2 poly/carbon cartridge traps fine debris, improves water clarity and removes impurities. Stage 3 Biomax provides... more

    $64.99

    FREE shipping

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    Wag.com

    (1,000+)
    Hagen Fluval Fluval Underwater Filter Stage 2 Poly/Carbon Cartridges: U3 Underwater Filter Cartridge

    Hagen Fluval Fluval Underwater Filter Stage 2 Poly/Carbon Cartridges: U3 Underwater Filter Cartridge

    Hagen Fluval Fluval Underwater Filter Stage 2 Poly/Carbon Cartridges: U3 Underwater Filter Cartridge - 2 Pack #A491 Fluval U Series Filter Poly / Carbon Cartridges have two sides for the most effective filtration.  The U Series Cartridges is a... more

    $4.38

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    Fluval Motor Replacement for Fluval U3 Underwater Aquarium Filter

    Fluval Motor Replacement for Fluval U3 Underwater Aquarium Filter

    Fluval Motor Replacement for Fluval U3 Underwater Aquarium Filter This motor is suitable for U3 underwater aquarium filter. This product weighs 0.67-pound. Measures 9-inch length by 3-1/2-inch height by 7-inch width. more

    $32.99

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    Wag.com

    (1,000+)
    Hagen Fluval Fluval Underwater Filter U-Series: U3 - 155 GPH - 7.5 Watts - (24 - 40 Gallons) #A475

    Hagen Fluval Fluval Underwater Filter U-Series: U3 - 155 GPH - 7.5 Watts - (24 - 40 Gallons) #A475

    Hagen Fluval Fluval Underwater Filter U-Series: U3 - 155 GPH - 7.5 Watts - (24 - 40 Gallons) #A475 Fluval Underwater Filters are powerful 3-stage filtration systems perfect for aquariums and reptile environments. Easy flip top for fast maintenance 3... more

    $54.99

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    Hagen Fluval Fluval Underwater Filter Stage 2 Poly/Carbon Cartridges: U3 BULK - 12 Cartridges - (6 x

    Hagen Fluval Fluval Underwater Filter Stage 2 Poly/Carbon Cartridges: U3 BULK - 12 Cartridges - (6 x

    Hagen Fluval Fluval Underwater Filter Stage 2 Poly/Carbon Cartridges: U3 BULK - 12 Cartridges - (6 x 2 Pack) #0491M Fluval U Series Filter Poly / Carbon Cartridges have two sides for the most effective filtration.  The U Series Cartridges is a... more

    $25.00

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    Fluval U3 Underwater Aquarium Filter System

    Fluval U3 Underwater Aquarium Filter System

    $49.99

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    Fluval U1 Underwater Filter Foam Pad, Size: Fits Fluval U1 Filter,Fits Fluval U2 Filter,Fits Fluval U3 Filter,Fits Fluval U4 Filter - A485

    Fluval U1 Underwater Filter Foam Pad, Size: Fits Fluval U1 Filter,Fits Fluval U2 Filter,Fits Fluval U3 Filter,Fits Fluval U4 Filter - A485

    Catching large particles and debris, the Fluval U1 Underwater Filter Foam Pad provides excellent mechanical filtration to keep your aquatic buddies healthy and happy. The pore size of this foam pad allows for great water flow and less clogging. It is... more

    $8.99

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    Fluval U2 Underwater Filter Poly/Carbon, Size: Fits Fluval U2 Filter,Fits Fluval U3 Filter,Fits Fluval U4 Filter - A490

    Fluval U2 Underwater Filter Poly/Carbon, Size: Fits Fluval U2 Filter,Fits Fluval U3 Filter,Fits Fluval U4 Filter - A490

    Two sides combined! The Fluval U2 Underwater Filter Poly/Carbon provides excellent chemical filtration for fresh, marine, or reptile environments. While the polyester pad filters our fine debris and contaminants, the carbon side removes harmful... more

    $10.99

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    Fluval "U" Internal Aquarium Filters Fluval U3

    Fluval "U" Internal Aquarium Filters Fluval U3

    The Fluval "U" Internal Filters are ideal for use as a permanent filter system, for supplemental filtration, or as a "quick-filter" to polish water. The U1 offers single stage filtration, while the U2/U3/U4 each offer three stage filtration to ensure... more

    $54.99

    FREE shipping

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    PetSolutions

    (25,000+)
    Fluval U Internal Filter Replacement Media U2/U3/U4 Bio Max

    Fluval U Internal Filter Replacement Media U2/U3/U4 Bio Max

    Foam pads trap large particles, the Poly/Carbon pads filter out fine debris and provide chemical filtration , and the BioMax bio rings create an optimal environment where beneficial bacteria can thrive. more

    $4.99

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    PetSolutions

    (25,000+)
    Fluval U Internal Filter Replacement Media U3 Foam Pad

    Fluval U Internal Filter Replacement Media U3 Foam Pad

    Foam pads trap large particles, the Poly/Carbon pads filter out fine debris and provide chemical filtration , and the BioMax bio rings create an optimal environment where beneficial bacteria can thrive. more

    $2.49

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    PetSolutions

    (25,000+)
    Fluval U3 Filter Poly/Carbon Catridge (2 pack)

    Fluval U3 Filter Poly/Carbon Catridge (2 pack)

    Fluval Poly/Carbon Cartridges features two sides for effective chemical filtration, the crucial second stage in the filtration process. The polyester filter pad side filters out fine debris and contaminants. The Carbon side filters out harmful liquid... more

    $6.49 $4.99

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    Fluval U4 Underwater Filter

    Fluval U4 Underwater Filter

    Fluval Underwater FilterFluval Underwater Filter with three stage filtration is ideal for use in fresh, marine or reptile environments. Stage 1 foam pad removes large particles. Stage 2 poly/carbon cartridge traps fine debris, improves water clarity... more

    $84.99 $63.74

    FREE shipping

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    petco.com

    (200,000+)
    Hagen Fluval Underwater Filter; U1 (Use in up to 15 gallons)

    Hagen Fluval Underwater Filter; U1 (Use in up to 15 gallons)

    Filter. Filters debris and provides optimal biological filtration more

    $37.88

    FREE shipping

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    Hagen Fluval Underwater Filter; U4 (Use in 34 - 65 gallon)

    Hagen Fluval Underwater Filter; U4 (Use in 34 - 65 gallon)

    Filter. Filters debris and provides optimal biological filtration more

    $85.99

    FREE shipping

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