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Best filter cartridges medias - January 2026

Last Updated - January 28, 2026

1
Best Choice

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

xbbwmrs

xbbwmrs 8-Pack Large Replacement Filter Cartridges Compatible with Tetra Whisper Bio-Bag Filters Large Aquarium Filter Cartridges for Whisper 20i/40i IQ20/30/45/60 PF20/30/40/60 Power Filters

xbbwmrs

$22.99

More Details
Main highlights
- 【XBBWMRS Friendly Customer Service】: As an honest seller, we will take responsibility for your purchase. If you have any questions about our large aquarium filter cartridges, please contact us. We will help you solve the problem as soon as possible.
- 【Large Replacement Filter Cartridge,Work Perfectly With Whisper Bio-bag Filters】: Our Large Replacement Filter Cartridges are perfect for Whisper IQ20, IQ30,IQ45 and IQ60 Power Filters and 20i & 40i Internals, or PF20, PF30, PF40, PF60 Power Filters. Ideal for 10-30/20-40/30-60 gallon fish tanks or aquariums.
- 【Increase In Quantity Not Price】:40% more activated carbon + 2 new filtration media zeolite and ceramic - for faster, more complete filtration. All of this is designed for our wet friends who live in water. Let them live in a cleaner, fresher space.
- 【Easy To Use And Ready To Go】:Our large fish tank filter cartridges are already assembly.Once rinsed, it can be placed in whisper filter for quick filtration. We recommend that you change the large replacement filter cartridge within 2-4 weeks for better results.
- 【5 in 1 Filtration System,Clear Water Made Simple】: ① Dual-sided mesh catches debris and fish waste. ②40% more activated carbon for longer lasting, more complete filtration ③ NEW aquarium filter media Zeo-lite, work to keep PH balance of the water.④ New filter media - Ceramics,works to absorb heavy metals from water and improve the taste of water.
$22.99
2
Best Value

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Switior

Switior 12 Pack Large Filter Cartridge for Top Fin RF-L Filter, Aqurium Filter Cartridge Refill for Top Fin Desktop Aquariums with Large Retreat Filter

Switior

$18.99

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Main highlights
- 【Quick Install】: Turn off the filter and remove the used cartridge and flush the new cartridge under water to remove dust. After rinsing, insert the cartridge into the flushing chamber and make sure the filter cartridge fits completely into the chamber
- 【New filter medium - zeolite】: Our zeolite is a reprocessed zeolite. Our spherical zeolite has a stronger cleaning ability, and it can adsorb heavy metals and other harmful ingredients. Balance PH to achieve a stable water state and improve the efficiency of fertilization of aquatic plants
- 【Large Filter Cartridge for Top Fin】: 12 Pack RF-L Replace Filter Cartridge.This Filter Cartridge compatible with Top Fin Desktop Aquariums with Large Retreat Filter. Size:7.48 x 2.67 inches
- 【High Quality Filter Cartridges】: We are committed to using high quality filter materials to purify water impurities efficiently. And we recommend that you change the filter every 2 to 4 weeks
- 【Efficient Water Purification】: Our filter cartridge consists of double high-density cotton, activated carbon, new filter media-Zeolite. Double high-density cotton can filter impurities and debris from the water.3 times activated carbon can effectively absorb 99% of the debris and odors. Zeolite further absorbs heavy metals and balances PH
$18.99
3

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Penn-Plax

Penn-Plax Replacement Media (2 Pack) – Fits Multi-Pore and Undergravel “E” Filters – Provides Chemical Filtration (FC2)

Penn-Plax

$7.49

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Main highlights
- TOP-QUALITY CARTRIDGE: Cartridges come together in a 2 Pack. For best results, replace cartridges every 2 to 4 weeks. They’re lightweight, disposable, and are safe for Freshwater and Saltwater aquariums.
- SHOP PENN-PLAX FOR ALL YOUR PET’S NEEDS: Penn-Plax is a manufacturer and distributor of top quality pet supplies, who specialize in creating excellent pet products for animals, both great and small.
- REPLACEMENT FILTER MEDIA: These Cartridges are made to fit the lift tubes of Muti-Pore and Undergravel “E” filters, serving as a replacement for when it’s time to cycle out aquarium filter media. We recommend replacing them once a month.
- OLD SCHOOL: There has been a burst of growth, development, and ingenuity within the aquatic industry, and although we are a part of this as well, we still provide replacement media for undergravel aquarium setups.
- CHEMICAL FILTRATION: In addition to absorbing ammonia, nitrites, nitrates, and phosphates in a timely manner, these Cartridges also remove harmful chemicals and toxins, clear up discolorations, and reduce foul odors from your tank.
$7.49
4

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Penn-Plax

Penn-Plax Replacement Media (2 Pack) – Fits Multi-Pore and Undergravel “E” Filters – Provides Chemical Filtration (FC2)

Penn-Plax

$7.49

More Details
Main highlights
- TOP-QUALITY CARTRIDGE: Cartridges come together in a 2 Pack. For best results, replace cartridges every 2 to 4 weeks. They’re lightweight, disposable, and are safe for Freshwater and Saltwater aquariums.
- SHOP PENN-PLAX FOR ALL YOUR PET’S NEEDS: Penn-Plax is a manufacturer and distributor of top quality pet supplies, who specialize in creating excellent pet products for animals, both great and small.
- REPLACEMENT FILTER MEDIA: These Cartridges are made to fit the lift tubes of Muti-Pore and Undergravel “E” filters, serving as a replacement for when it’s time to cycle out aquarium filter media. We recommend replacing them once a month.
- OLD SCHOOL: There has been a burst of growth, development, and ingenuity within the aquatic industry, and although we are a part of this as well, we still provide replacement media for undergravel aquarium setups.
- CHEMICAL FILTRATION: In addition to absorbing ammonia, nitrites, nitrates, and phosphates in a timely manner, these Cartridges also remove harmful chemicals and toxins, clear up discolorations, and reduce foul odors from your tank.
$7.49
5

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Tetra

Tetra Whisper Bio-Bag Filter Aquarium Cartridges, Large Filter for Freshwater and Marine Fish, Removes Odors and Discoloration, Easy to Assemble, 12 Large Blue Filters

Tetra

$14.57

More Details
Main highlights
- USAGE Change monthly or sooner if needed
- UNASSEMBLED REPLACEMENT CARBON FILTER Keeps aquarium water crystal clear – removes odors and discoloration
- FITS TETRA WHISPER WATER FILTERS Color coded to make it simple to remember which replacement cartridge size to purchase
- CONVENIENT Easy to assemble and easy to replace
- CATCHES DEBRIS Dense dual-sided mesh filters debris and fish waste
$14.57

Best filter cartridges medias - January 2026

xbbwmrs 8-Pack Large Replacement Filter Cartridges Compatible with Tetra Whisper Bio-Bag Filters Large Aquarium Filter Cartridges for Whisper 20i/40i IQ20/30/45/60 PF20/30/40/60 Power Filters

Switior 12 Pack Large Filter Cartridge for Top Fin RF-L Filter, Aqurium Filter Cartridge Refill for Top Fin Desktop Aquariums with Large Retreat Filter

Penn-Plax Replacement Media (2 Pack) – Fits Multi-Pore and Undergravel “E” Filters – Provides Chemical Filtration (FC2)

Penn-Plax Replacement Media (2 Pack) – Fits Multi-Pore and Undergravel “E” Filters – Provides Chemical Filtration (FC2)

Tetra Whisper Bio-Bag Filter Aquarium Cartridges, Large Filter for Freshwater and Marine Fish, Removes Odors and Discoloration, Easy to Assemble, 12 Large Blue Filters

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