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Best Seller
Rite-Size Ready-To-Use Filter Cartridges, Pack of 6, 12 OZ

Rite-Size Ready-To-Use Filter Cartridges, Pack of 6, 12 OZ

Ready-to-use filter cartridges for Penguin Power Filters. Pre-assembled cartridges are packed with Black Diamond Pure Activated Carbon--works twice as fast and keeps working long after other carbons quit.Double-thick polyfiber pad.Makes aquarium water... ... more

Rite-Size Ready-To-Use Filter Cartridges, Pack of 6, 12 OZ

Ready-to-use filter cartridges for Penguin Power Filters. Pre-assembled cartridges are packed with Black Diamond Pure Activated Carbon--works twice as fast and keeps working long after other carbons quit.Double-thick polyfiber pad.Makes aquarium water...

Petco.com

$24.99

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Whisper Bio-Bag Medium Disposable Filter Cartridges for Aquariums, 12 Count, 12 CT

Whisper Bio-Bag Medium Disposable Filter Cartridges for Aquariums, 12 Count, 12 CT

Ultra-Activated carbon absorbs odors. Use these replacement filter cartridges in your water filter - each package is color-coded to make it simple to remember which size to purchase. These replacement filters are assembled and ready to use for your... ... more

Whisper Bio-Bag Medium Disposable Filter Cartridges for Aquariums, 12 Count, 12 CT

Ultra-Activated carbon absorbs odors. Use these replacement filter cartridges in your water filter - each package is color-coded to make it simple to remember which size to purchase. These replacement filters are assembled and ready to use for your...

Petco.com

$7.73

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Best Seller
Whisper Bio-Bag Filter Cartridges for Aquarium Filtration, Small, Pack of 6, 6 CT

Whisper Bio-Bag Filter Cartridges for Aquarium Filtration, Small, Pack of 6, 6 CT

Tetra Whisper Filter Cartridges help keep aquarium water sparkling clean. The dual-sided mesh catches debris and fish waste, and Ultra-Activated carbon removes odors and discoloration. These filters are ready to use for your convenience. An aquarium... ... more

Whisper Bio-Bag Filter Cartridges for Aquarium Filtration, Small, Pack of 6, 6 CT

Tetra Whisper Filter Cartridges help keep aquarium water sparkling clean. The dual-sided mesh catches debris and fish waste, and Ultra-Activated carbon removes odors and discoloration. These filters are ready to use for your convenience. An aquarium...

Petco.com

$4.99

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Whisper Bio-Bag Filter Cartridges for Aquarium Filtration, X-Small, Pack of 4, 4 CT

Whisper Bio-Bag Filter Cartridges for Aquarium Filtration, X-Small, Pack of 4, 4 CT

Tetra Whisper Filter Cartridges help keep aquarium water sparkling clean. The dual-sided mesh catches debris and fish waste, and Ultra-Activated carbon removes odors and discoloration. These filters are ready to use for your convenience. An aquarium... ... more

Whisper Bio-Bag Filter Cartridges for Aquarium Filtration, X-Small, Pack of 4, 4 CT

Tetra Whisper Filter Cartridges help keep aquarium water sparkling clean. The dual-sided mesh catches debris and fish waste, and Ultra-Activated carbon removes odors and discoloration. These filters are ready to use for your convenience. An aquarium...

Petco.com

$5.99

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Whisper Bio-Bag Large Disposable Filter Cartridges, 12 Count

Whisper Bio-Bag Large Disposable Filter Cartridges, 12 Count

Our Whisper Bio-Bag Disposable Filter Cartridges keep aquarium water crystal clear and remove odors and discoloration. The dense, dual-sided mesh catches debris and fish waste. Ultra-Activated carbon absorbs odors. Use these replacement filter... ... more

Whisper Bio-Bag Large Disposable Filter Cartridges, 12 Count

Our Whisper Bio-Bag Disposable Filter Cartridges keep aquarium water crystal clear and remove odors and discoloration. The dense, dual-sided mesh catches debris and fish waste. Ultra-Activated carbon absorbs odors. Use these replacement filter...

Petco.com

$11.25

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Whisper Bio-Bag Disposable Filter Cartridges, Small, Pack of 2

Whisper Bio-Bag Disposable Filter Cartridges, Small, Pack of 2

Clear water made simple.They're tough on debris:Ultra-activated carbon absorbs odors and discoloration better than competing brands.Dense, dual-sided mesh catches debris and fish waste.More debris-trapping mesh than other products.And easy on... ... more

Whisper Bio-Bag Disposable Filter Cartridges, Small, Pack of 2

Clear water made simple.They're tough on debris:Ultra-activated carbon absorbs odors and discoloration better than competing brands.Dense, dual-sided mesh catches debris and fish waste.More debris-trapping mesh than other products.And easy on...

Petco.com

$2.65

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Whisper Bio-Bag Disposable Filter Cartridge For Aquariums, 3 Count, Large

Whisper Bio-Bag Disposable Filter Cartridge For Aquariums, 3 Count, Large

Clear water made simple.They're tough on debris:Ultra-activated carbon absorbs odors and discoloration better than competing brands.Dense, dual-sided mesh catches debris and fish waste.More debris-trapping mesh than other products.And easy on... ... more

Whisper Bio-Bag Disposable Filter Cartridge For Aquariums, 3 Count, Large

Clear water made simple.They're tough on debris:Ultra-activated carbon absorbs odors and discoloration better than competing brands.Dense, dual-sided mesh catches debris and fish waste.More debris-trapping mesh than other products.And easy on...

Petco.com

$10.99

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Whisper Bio-Bag Medium Disposable Filter Cartridges for Aquariums, 3 Count, 3 CT

Whisper Bio-Bag Medium Disposable Filter Cartridges for Aquariums, 3 Count, 3 CT

Clear water made simple.They're tough on debris:Ultra-activated carbon absorbs odors and discoloration better than competing brands.Dense, dual-sided mesh catches debris and fish waste.More debris-trapping mesh than other products.And easy on... ... more

Whisper Bio-Bag Medium Disposable Filter Cartridges for Aquariums, 3 Count, 3 CT

Clear water made simple.They're tough on debris:Ultra-activated carbon absorbs odors and discoloration better than competing brands.Dense, dual-sided mesh catches debris and fish waste.More debris-trapping mesh than other products.And easy on...

Petco.com

$3.99

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Marineland r Ready-To-Use Filter Cartridges, Pack of 4, 4 CT

Marineland r Ready-To-Use Filter Cartridges, Pack of 4, 4 CT

Custom designed for Emperor and Emperor 280 Filter Systems. Mechanical and chemical filtration in a ready-to-use cartridge--no messy assembly required. Changes in an instant. Makes water sparkle. The Emperor Cartridge combines with Emperor's Bio-Wheel... ... more

Marineland r Ready-To-Use Filter Cartridges, Pack of 4, 4 CT

Custom designed for Emperor and Emperor 280 Filter Systems. Mechanical and chemical filtration in a ready-to-use cartridge--no messy assembly required. Changes in an instant. Makes water sparkle. The Emperor Cartridge combines with Emperor's Bio-Wheel...

Petco.com

$14.99

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Marineland r Ready-To-Use Filter Cartridges, Pack of 2, 2 CT

Marineland r Ready-To-Use Filter Cartridges, Pack of 2, 2 CT

Custom designed for Emperor and Emperor 280 Filter Systems. Mechanical and chemical filtration in a ready-to-use cartridge--no messy assembly required. Changes in an instant. Makes water sparkle. The Emperor Cartridge combines with Emperor's Bio-Wheel... ... more

Marineland r Ready-To-Use Filter Cartridges, Pack of 2, 2 CT

Custom designed for Emperor and Emperor 280 Filter Systems. Mechanical and chemical filtration in a ready-to-use cartridge--no messy assembly required. Changes in an instant. Makes water sparkle. The Emperor Cartridge combines with Emperor's Bio-Wheel...

Petco.com

$8.29

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Marineland Ready-To-Use Filter Cartridges for System 3 and Explorer

Marineland Ready-To-Use Filter Cartridges for System 3 and Explorer

Three-pack of custom designed filters for Eclipse System Three and Eclipse Explorer.Preassembled Eclipse Filter Cartridges provide superior mechanical and chemical filtration--screening out dirt as they remove discoloration, odor-causing waste, and... ... more

Marineland Ready-To-Use Filter Cartridges for System 3 and Explorer

Three-pack of custom designed filters for Eclipse System Three and Eclipse Explorer.Preassembled Eclipse Filter Cartridges provide superior mechanical and chemical filtration--screening out dirt as they remove discoloration, odor-causing waste, and...

Petco.com

$6.33

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Whisper Internal Filter, 4 Gallon

Whisper Internal Filter, 4 Gallon

Three filters in one for cleaner water and healthier fish. All Whisper power filters use easy to change Bio-Bag filter cartridges which remove particles floating in your aquarium while also removing discoloration and odors with its activated carbon.... ... more

Whisper Internal Filter, 4 Gallon

Three filters in one for cleaner water and healthier fish. All Whisper power filters use easy to change Bio-Bag filter cartridges which remove particles floating in your aquarium while also removing discoloration and odors with its activated carbon....

Petco.com

$15.99

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Whisper IQ Filter, 30 Gallon, 6.5 W / 6.875 IN

Whisper IQ Filter, 30 Gallon, 6.5 W / 6.875 IN

The Tetra Whisper IQ Filter 20 is made for 20 gallon aquariums and utilizes medium filter cartridges. This quiet, durable and easy filter system uses StayClean Technology to provide easier maintenance and healthier fish. A soft barrier decouples the... ... more

Whisper IQ Filter, 30 Gallon, 6.5 W / 6.875 IN

The Tetra Whisper IQ Filter 20 is made for 20 gallon aquariums and utilizes medium filter cartridges. This quiet, durable and easy filter system uses StayClean Technology to provide easier maintenance and healthier fish. A soft barrier decouples the...

Petco.com

$18.99

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Whisper IQ Filter, 45 Gallon, 9.2 W / 7 IN

Whisper IQ Filter, 45 Gallon, 9.2 W / 7 IN

The Tetra Whisper IQ Filter 20 is made for 20 gallon aquariums and utilizes medium filter cartridges. This quiet, durable and easy filter system uses StayClean Technology to provide easier maintenance and healthier fish. A soft barrier decouples the... ... more

Whisper IQ Filter, 45 Gallon, 9.2 W / 7 IN

The Tetra Whisper IQ Filter 20 is made for 20 gallon aquariums and utilizes medium filter cartridges. This quiet, durable and easy filter system uses StayClean Technology to provide easier maintenance and healthier fish. A soft barrier decouples the...

Petco.com

$29.99

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Whisper IQ Filter, 60 Gallon, 11.8 W / 12.875 IN

Whisper IQ Filter, 60 Gallon, 11.8 W / 12.875 IN

The Tetra Whisper IQ Filter 20 is made for 20 gallon aquariums and utilizes medium filter cartridges. This quiet, durable and easy filter system uses StayClean Technology to provide easier maintenance and healthier fish. A soft barrier decouples the... ... more

Whisper IQ Filter, 60 Gallon, 11.8 W / 12.875 IN

The Tetra Whisper IQ Filter 20 is made for 20 gallon aquariums and utilizes medium filter cartridges. This quiet, durable and easy filter system uses StayClean Technology to provide easier maintenance and healthier fish. A soft barrier decouples the...

Petco.com

$23.15

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Whisper IQ Filter, 20 Gallon, 4.5 W / 6.875 IN

Whisper IQ Filter, 20 Gallon, 4.5 W / 6.875 IN

The Tetra Whisper IQ Filter 20 is made for 20 gallon aquariums and utilizes medium filter cartridges. This quiet, durable and easy filter system uses StayClean Technology to provide easier maintenance and healthier fish. A soft barrier decouples the... ... more

Whisper IQ Filter, 20 Gallon, 4.5 W / 6.875 IN

The Tetra Whisper IQ Filter 20 is made for 20 gallon aquariums and utilizes medium filter cartridges. This quiet, durable and easy filter system uses StayClean Technology to provide easier maintenance and healthier fish. A soft barrier decouples the...

Petco.com

$18.99

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Carbon Filter Replacement Cartridge 3-Pack, Small

Carbon Filter Replacement Cartridge 3-Pack, Small

The Imagitarium Carbon Filter Replacement Cartridge 3-Pack includes three disposable and easy-to-use cartridges so your filter can trap unhealthy particulate matter. Each refill also helps provide biological filtration by cultivating and maintaining... ... more

Carbon Filter Replacement Cartridge 3-Pack, Small

The Imagitarium Carbon Filter Replacement Cartridge 3-Pack includes three disposable and easy-to-use cartridges so your filter can trap unhealthy particulate matter. Each refill also helps provide biological filtration by cultivating and maintaining...

Petco.com

$4.99

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Large Replacement Carbon Filters for EX30, EX45, and EX70 Filtration Systems, Pack of 4

Large Replacement Carbon Filters for EX30, EX45, and EX70 Filtration Systems, Pack of 4

Tetra Replacement Carbon Filters for the EX20, EX30, EX45, and EX70 filtration systems are sold in packs of 4 and are ready to use right out of the box. They also come with a Timestrip Cartridge Change Indicator which takes the guesswork out of when to... ... more

Large Replacement Carbon Filters for EX30, EX45, and EX70 Filtration Systems, Pack of 4

Tetra Replacement Carbon Filters for the EX20, EX30, EX45, and EX70 filtration systems are sold in packs of 4 and are ready to use right out of the box. They also come with a Timestrip Cartridge Change Indicator which takes the guesswork out of when to...

Petco.com

$15.99

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Whisper PF10 Power Filtration System

Whisper PF10 Power Filtration System

The Tetra Whisper PF10 Power Filtration System is really three filters in one for cleaner water and healthier fish. The Tetra Power Filter 10 uses a 3-stage filtration process to create clean, healthy water for your fish. This dependable filter... ... more

Whisper PF10 Power Filtration System

The Tetra Whisper PF10 Power Filtration System is really three filters in one for cleaner water and healthier fish. The Tetra Power Filter 10 uses a 3-stage filtration process to create clean, healthy water for your fish. This dependable filter...

Petco.com

$14.98

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Large Power Filter Replacement Cartridges, 8 OZ

Large Power Filter Replacement Cartridges, 8 OZ

For fresh & saltwater aquariums. Convenient & ready to use, these filters remove impurities, odors & discoloration with high-grade activated carbon for water clarity. ... more

Large Power Filter Replacement Cartridges, 8 OZ

For fresh & saltwater aquariums. Convenient & ready to use, these filters remove impurities, odors & discoloration with high-grade activated carbon for water clarity.

Petco.com

$6.99

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Rite Size B Penguin Power Filter Replacement Cartridge, Pack of 6, .514 LB

Rite Size B Penguin Power Filter Replacement Cartridge, Pack of 6, .514 LB

Ready-to-use filter cartridges for Penguin Power Filters. Pre-assembled cartridges are packed with Black Diamond Pure Activated Carbon--works twice as fast and keeps working long after other carbons quit.Double-thick polyfiber pad.Makes aquarium water... ... more

Rite Size B Penguin Power Filter Replacement Cartridge, Pack of 6, .514 LB

Ready-to-use filter cartridges for Penguin Power Filters. Pre-assembled cartridges are packed with Black Diamond Pure Activated Carbon--works twice as fast and keeps working long after other carbons quit.Double-thick polyfiber pad.Makes aquarium water...

Petco.com

$21.99

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Medium Power Filter Replacement Cartridges, 6.5 IN

Medium Power Filter Replacement Cartridges, 6.5 IN

Precision design to fit the Petco Power Filter 30 C with Bio-Falls technology and the Penn Plax Cascade 100. Each cartridge contains activated carbon for water clarity. For use with 10-30 gallon tanks. ... more

Medium Power Filter Replacement Cartridges, 6.5 IN

Precision design to fit the Petco Power Filter 30 C with Bio-Falls technology and the Penn Plax Cascade 100. Each cartridge contains activated carbon for water clarity. For use with 10-30 gallon tanks.

Petco.com

$7.99

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Replacement Filter Cartridges, Medium, Pack of 3, 3 CT

Replacement Filter Cartridges, Medium, Pack of 3, 3 CT

Ready-to-use, preassembled filter cartridges install in seconds and help create crystal-clear, healthy water for your aquarium.Patented dual-sided replaceable dense-floss cartridges filter out more particles and debrisCartridges contain more activated... ... more

Replacement Filter Cartridges, Medium, Pack of 3, 3 CT

Ready-to-use, preassembled filter cartridges install in seconds and help create crystal-clear, healthy water for your aquarium.Patented dual-sided replaceable dense-floss cartridges filter out more particles and debrisCartridges contain more activated...

Petco.com

$7.95

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Replacement Filter Cartridges, Medium, Pack of 6, 6 CT

Replacement Filter Cartridges, Medium, Pack of 6, 6 CT

Ready-to-use, preassembled filter cartridges install in seconds and help create crystal-clear, healthy water for your aquarium.Patented dual-sided replaceable dense-floss cartridges filter out more particles and debrisCartridges contain more activated... ... more

Replacement Filter Cartridges, Medium, Pack of 6, 6 CT

Ready-to-use, preassembled filter cartridges install in seconds and help create crystal-clear, healthy water for your aquarium.Patented dual-sided replaceable dense-floss cartridges filter out more particles and debrisCartridges contain more activated...

Petco.com

$14.95

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MiniBow Replacement Filter Cartridges, Small, Pack of 3, 3 CT

MiniBow Replacement Filter Cartridges, Small, Pack of 3, 3 CT

Ready-to-use, preassembled filter cartridges install in seconds and help create crystal-clear, healthy water for your aquarium.Patented dual-sided replaceable dense-floss cartridges filter out more particles and debrisCartridges contain more activated... ... more

MiniBow Replacement Filter Cartridges, Small, Pack of 3, 3 CT

Ready-to-use, preassembled filter cartridges install in seconds and help create crystal-clear, healthy water for your aquarium.Patented dual-sided replaceable dense-floss cartridges filter out more particles and debrisCartridges contain more activated...

Petco.com

$9.49

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Replacement Filter Cartridges, Large, Pack of 6, 6 CT

Replacement Filter Cartridges, Large, Pack of 6, 6 CT

Ready-to-use, preassembled filter cartridges install in seconds and help create crystal-clear, healthy water for your aquarium.Patented dual-sided replaceable dense-floss cartridges filter out more particles and debrisCartridges contain more activated... ... more

Replacement Filter Cartridges, Large, Pack of 6, 6 CT

Ready-to-use, preassembled filter cartridges install in seconds and help create crystal-clear, healthy water for your aquarium.Patented dual-sided replaceable dense-floss cartridges filter out more particles and debrisCartridges contain more activated...

Petco.com

$18.95

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Replacement Filter Cartridges, Large, Pack of 3, 3 CT

Replacement Filter Cartridges, Large, Pack of 3, 3 CT

Ready-to-use, preassembled filter cartridges install in seconds and help create crystal-clear, healthy water for your aquarium.Patented dual-sided replaceable dense-floss cartridges filter out more particles and debrisCartridges contain more activated... ... more

Replacement Filter Cartridges, Large, Pack of 3, 3 CT

Ready-to-use, preassembled filter cartridges install in seconds and help create crystal-clear, healthy water for your aquarium.Patented dual-sided replaceable dense-floss cartridges filter out more particles and debrisCartridges contain more activated...

Petco.com

$9.95

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Rite-Size Bonded Filter Sleeve for Penguin 100, Pack of 6

Rite-Size Bonded Filter Sleeve for Penguin 100, Pack of 6

Ready-to-use filter cartridges for Penguin Power Filters. Pre-assembled cartridges are packed with Black Diamond Pure Activated Carbon--works twice as fast and keeps working long after other carbons quit.Double-thick polyfiber pad.Makes aquarium water... ... more

Rite-Size Bonded Filter Sleeve for Penguin 100, Pack of 6

Ready-to-use filter cartridges for Penguin Power Filters. Pre-assembled cartridges are packed with Black Diamond Pure Activated Carbon--works twice as fast and keeps working long after other carbons quit.Double-thick polyfiber pad.Makes aquarium water...

Petco.com

$21.99

go to store