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Tetra Whisper Bio-Bags Medium Filter Cartridge, 3 count

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$4.21 First Time Autoship Price
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About This Item

Details

  • 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 available in a 1-count and 3-count option.

Instructions

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Frequently bought together

Questions & Answers

4 Customer Questions

How often do these need to be changed?

Answer by Chewy • Nov 29, 2020
It is recommended to change the filters monthly.

Are these 90 125 mpg

Answer by Chewy • Feb 05, 2018
The filters go by the gallons size of the tank. This filter fits Whisper Power Filters 10i, E, J, 10 and MicroFilter.

Can you open the top clamp to add other filter media and than reseal?

Answer by Chewy • Feb 04, 2019
The Bio-Bags are not intended to be opened and refilled. It is advisable to replace Bio-Bags when they are clogged.

what size tank?

Answer by Chewy • Jul 18, 2021
These Medium Bio-Bags are designed to fit Whisper Power Filters 10, 10i, E, J and MicroFilter (not included).
Reviews
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4.6
Rated 4.6 out of 5 stars
418 Ratings
Terms & Conditions

140 Customer Reviews

Rated 5 out of 5 stars
By Reptilemom on Sep 19, 2017

Amazing savings!!

We require these filters for our reptiles and the cost adds up at $12 for 3 filters at our local pet store...the savings on the chewy.com site are amazing! I ordered

We require these filters for our reptiles and the cost adds up at $12 for 3 filters at our local pet store...the savings on the chewy.com site are amazing! I ordered several months worth of filters and will absolutely be a forever customer!

Rated 5 out of 5 stars
By Scrapurr7 on Aug 4, 2020

For many years!

I've been using these cartridges for years. For smaller tanks, I use them alone. For my 20 and 30 gallon tanks, I use them as a back-up for my larger pumps. They're

I've been using these cartridges for years. For smaller tanks, I use them alone. For my 20 and 30 gallon tanks, I use them as a back-up for my larger pumps. They're terrific!

Rated 4 out of 5 stars
By Billie on Dec 3, 2018

Great filter!

I love these filters and this is a much better price than what I was paying elsewhere. My only complaint is that my first order arrived with one of the filter missing

I love these filters and this is a much better price than what I was paying elsewhere. My only complaint is that my first order arrived with one of the filter missing the charcoal, lol. Oh well, still a great deal and I will order again.

Rated 5 out of 5 stars
By Joan on Dec 22, 2025

This is the best filter I have found for my fish tank.

This filter keeps a lot of stuff from circulating throughout my fish tanks. Whether it's a 35 gallon or a 10 gallon tank.

This filter keeps a lot of stuff from circulating throughout my fish tanks. Whether it's a 35 gallon or a 10 gallon tank.

Rated 5 out of 5 stars
By Lorie on Nov 29, 2025

Another Amazing Customer Service Experience

Received the wrong style filter cartridge for my new aquarium setup. Called and the service rep (Caren?) listened to me and researched until we were sure we were

Received the wrong style filter cartridge for my new aquarium setup. Called and the service rep (Caren?) listened to me and researched until we were sure we were adding the correct cartridge to my autoship. Then she rushed me out a box so we could test it and be sure. I received the correct filter cartridge a couple days later, and my Betta Harry is doing great!

Rated 5 out of 5 stars
By Alli on Nov 5, 2019

Excellent prices!

As I said on the Large filter cartridges, I usually pay $5 for ONE! This time I paid $5 for 3! They only clog up after a month of use, when I change them.

As I said on the Large filter cartridges, I usually pay $5 for ONE! This time I paid $5 for 3! They only clog up after a month of use, when I change them.

Rated 5 out of 5 stars
By WesD on Dec 15, 2020

Tetra med. Bio-bag

Works great in my filter, fully assembled, in a sealed bag in the box.

Works great in my filter, fully assembled, in a sealed bag in the box.

Rated 5 out of 5 stars
By Katherine on Aug 2, 2018

Filter Works

The box was a bit squished but the filters were not damaged. Mr Fish says it works and he is breathing easier. :)

The box was a bit squished but the filters were not damaged. Mr Fish says it works and he is breathing easier. :)

Rated 5 out of 5 stars
By DonnaLee on Feb 17, 2020

Fish filters

They work lol as they should . Fit nicely and keep tank clean

They work lol as they should . Fit nicely and keep tank clean

Rated 5 out of 5 stars
By trinity on Apr 10, 2020

perfect and affordable!

These are great! Make sure you replace them every 2 weeks especially if you got A lot of fish! I wouldn’t recommend only replacing your filter once a month with

These are great! Make sure you replace them every 2 weeks especially if you got A lot of fish! I wouldn’t recommend only replacing your filter once a month with any filter I always try to keep replacing filters often.fie a healthier happy fish :). Enjoy guys.