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    Fluval U3 Underwater Filter Poly/carbon A491 2pks.

    Fluval U3 Underwater Filter Poly/carbon A491 2pks.

    Provides effective chemical filtration Custom fit for the Fluval U3 Filter Traps fine debris, improves water clarity and removes impurities Easy to replace Works in freshwater, marine or reptile environments Fluval Poly/Carbon Cartridges features two... more

    $6.48

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    Hagen 12-Pack Fluval Underwater U2 U3 U4 BioMax Media for Aquarium Filter

    Hagen 12-Pack Fluval Underwater U2 U3 U4 BioMax Media for Aquarium Filter

    Fluval BioMax provides an optimal environment for beneficial bacteria growth. The bio rings have a complex pore system creating an optimal environment where beneficial bacteria can thrive. It also reduces and controls ammonia and nitrate. Fluval BioMax... more

    $55.68

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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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    (12) Fluval U4 Underwater Filter Poly/carbon A492 2pks.

    (12) Fluval U4 Underwater Filter Poly/carbon A492 2pks.

    Provides effective chemical filtration Custom fit for the Fluval U4 Filter Traps fine debris, improves water clarity and removes impurities Easy to replace Works in freshwater, marine or reptile environments Fluval Poly/Carbon Cartridges features two... more

    $48.15

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    (6) Fluval U4 Underwater Filter Poly/carbon A492 2pks.

    (6) Fluval U4 Underwater Filter Poly/carbon A492 2pks.

    Provides effective chemical filtration Custom fit for the Fluval U4 Filter Traps fine debris, improves water clarity and removes impurities Easy to replace Works in freshwater, marine or reptile environments Fluval Poly/Carbon Cartridges features two... more

    $31.95

    FREE shipping

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    (3) Fluval U2 Underwater Filter Poly/carbon A490 2pks.

    (3) Fluval U2 Underwater Filter Poly/carbon A490 2pks.

    Provides effective chemical filtration Custom fit for the Fluval U2 Filter Traps fine debris, improves water clarity and removes impurities Easy to replace Works in freshwater, marine or reptile environments Fluval Poly/Carbon Cartridges features two... more

    $12.95

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    Hagen 12-Pack Fluval U3 Poly/Carbon Cartridge Aquarium Water Filter

    Hagen 12-Pack Fluval U3 Poly/Carbon Cartridge Aquarium Water Filter

    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

    $44.82

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    AquaClear Suction Cup Bracket for Fluval Underwater Filters

    AquaClear Suction Cup Bracket for Fluval Underwater Filters

    This suction cup bracket is used for Fluval 1, 2, 3, 4 Plus underwater filters. Comes with 3 suction cups. Aquarium rim attachment. Measures 1-inch length by 4-inch width by 6-1/2-inch height. more

    $13.19

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    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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    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 polyester... more

    $4.38

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    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 polyester... more

    $25.00

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    "Motor Unit for Fluval U1/U2/U3 Aquarium Filter"

    "Motor Unit for Fluval U1/U2/U3 Aquarium Filter"

    " Free shipping on all US orders! Orders ship within 24 hours Monday through Friday. Returns accepted for 14 days after item is received. Free return shipping. Warranty is not included. " more

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    $34.99

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    "Filter Body For Fluval U3 "

    "Filter Body For Fluval U3 "

    " Free shipping on all US orders! Orders ship within 24 hours Monday through Friday. Returns accepted for 14 days after item is received. Free return shipping. Warranty and original packaging not included. " more

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    $18.99

    FREE shipping

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    "Impeller Shaft for Fluval U1/U2/U3 Aquarium Filter"

    "Impeller Shaft for Fluval U1/U2/U3 Aquarium Filter"

    " Free shipping on all US orders! Orders ship within 24 hours Monday through Friday. Returns accepted for 14 days after item is received. Free return shipping. Warranty is not included. " more

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    $16.99

    FREE shipping

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    Fluval 1 "Plus" Foam Insert (2Pack)

    Fluval 1 "Plus" Foam Insert (2Pack)

    Fluval 1 "Plus" Foam Insert (2Pack) is specially developed as a standard filter medium for the Fluval 1 Plus Underwater Filter and maximizes surface contact between the water and the media. The large filtering surface ensures efficient cleaning of the... more

    $4.79

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