Tetra Whisper Bio-Bags Small Filter Cartridge, 2 count

By Tetra
Rated 4.5385 out of 5 stars
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Tetra Whisper Bio-Bags Small Filter Cartridge, 2 count slide 1 of 5
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Tetra Whisper Bio-Bags Small Filter Cartridge, 2 count slide 1 of 5
$2.09Chewy Price
$3.99Chewy Price
$1.99Autoship Price
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This Item - Tetra Whisper Bio-Bags Small Filter Cartridge, 2 count
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Total Price: $0.00

About This Item

  • Designed to help keep your aquarium crystal clear.
  • Ultra-activated carbon works to absorb discoloration and odors, keeping your fish tank in tip-top condition.
  • Pre-assembled Bio-Bags are ready to use right out of the box.
  • Double-sided mesh is dense to trap fish waste and debris.
  • Disposable Bio-Bags are compatible with Tetra's Whisper PF10 and 3i Power Filters (not included).

Compatible Products

Keep your system running smoothly with Tetra filters.

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Fish TypeTropical Freshwater, Betta, Cichlid, Goldfish, Marine FishTropical Freshwater, Marine FishTropical Freshwater, Marine FishMarine Invertebrate, Goldfish, Marine FishTropical Freshwater
MaterialMesh, Synthetic FabricMesh, Synthetic FabricMesh, Synthetic FabricPlastic
Aquarium TypeFreshwater, SaltwaterFreshwater, SaltwaterFreshwater, SaltwaterSaltwaterFreshwater, Saltwater

Questions & Answers

10 Customer Questions

do you put the cotton side in front or back (there is a plastic back).. i didn't know if it mattered? thank you
Answer by ChewyNov 03, 2017
The cotton should be on the front side of the filter, that way it catches any bacteria that may be in the tank.

Is this filter slightly smaller at the bottom? 2.16 at top and 1.78 at bottom and 3.68 tall.
Answer by ChewyOct 06, 2018
The overall dimensions are 3.8 inches tall x 2.1 inches across at its longest point. The images do shows that the cartridge narrows a bit towards the bottom.

Do I need to turn off my filter system to just change the filter?
Answer by ChewyApr 23, 2018
We'd recommend unplugging the filter when changing the filter cartridge.

Will these filters work for 3.5 gallon tanks ?
Answer by ChewyNov 27, 2020
These Whisper Bio-Bags Small Filter Cartridge are designed to fit Tetra's Whisper PF10 (5-10 gallons) and 3i (up to 3 gallons) Power Filters.

ReviewsWrite a Review

Rated 4.5385 out of 5 stars
39 Reviews
Would recommend to a friend

39 Customer Reviews

Rated 5 out of 5 stars
By Bunfish on Mar 26, 2022

Great Product

Great price, good quality. Happy with filtration it provides, water very clear using this filter.

Rated 5 out of 5 stars
By BettaB on Jul 25, 2021


Quick!! Product in stock. Easy checkout. I will use Chewy again for aquarium needs.

Rated 3 out of 5 stars
By Leah on Jan 15, 2021

Upsetting experience!

I love these filters so much I use them in all my tanks. But sadly one came broken! I totally recommend them I’m just sad this happened.

Rated 5 out of 5 stars
By Happyness on Jan 29, 2021

Our beta loves them

Love the convince . I love the home delivery. Cheaper then buying them in the store

Rated 5 out of 5 stars
By Smallunicorns on Dec 7, 2020

Great filters

They do exactly what they’re designed to do, and they do it well.

Rated 5 out of 5 stars
By JenPaz on Oct 7, 2020

Keeps water sparkling clean!

These filters may be small but they work great to keep our Ghost Crayfish's tank clean! Fast delivery!

Rated 5 out of 5 stars
By GG80 on Aug 25, 2020

Love these little filters

These were no that easy to find so was happy to find them in 6 packs.

Rated 5 out of 5 stars
By Phoebesviolets on Feb 9, 2020

Bumps it up!

Provides extra water stability and clarity when added to the filter medium in my small tank with a pair of leleupi.Has helped keep them happy for 5 years now.

Rated 5 out of 5 stars
By Michelle on May 10, 2020

Exactly as described

Great price, arrived by date as advised. Great communication

Rated 2 out of 5 stars
By Filters on Feb 10, 2020

Fish Filters

These are to big for my fish filter. Couldn't see the pictures so I just went by they were small...but unfortunately they don't fit.