Tetra BIO-Bag Aquarium Filter Cartridge, Medium, 4 count

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About This Item

Details

  • Filter helps maintain healthy pH levels in your aquarium.
  • Removes dirt and debris with duel-sided floss.
  • Provides four stages of filtration with ultra-activated carbon.
  • Removes odors and yellow discoloration from your tank.
  • Compatible with BIO-Bag filters.
Learn More About Tetra From Our Team of Experts

Questions & Answers

4 Customer Questions


Does this filter come already assembled and ready to insert in filter?

Answer by Chewy • Aug 01, 2019
These filters come unassembled.

What are the dimensions

Answer by Chewy • Apr 26, 2019
The small BIO-bag measures 3.8 inches long x 2.1 inches wide, the medium BIO-bag measures 5.2 inches long by 3 inches wide, and the large BIO-bag measures 6.4 inches long by 4.6 inches wide.

Can you use more than one in a 50 gal tank?

Answer by Chewy • Jun 30, 2022
More than one filter can be used in a 50 gallon tank. Tetra recommends using a filter system at each end of larger tanks. As long as the water does not backflow around the intake tube, the customer can also add a second bag or other media to the filter.

Does this come with the green plastic cartridge? We have the other style without the spot for the tablet, which cannot be used for this.

Answer by Chewy • Jun 11, 2021
This product includes the frame.
4.8
Rated 4.8 out of 5 stars
58 Ratings

17 Customer Reviews



Rated 5 out of 5 stars
By Sussy on Sep 22, 2025

Fits Aqua Culture. Water is so clear

These M Tetra filters fit my Aqua Culture filter. The amount of carbon does a great job of filtering. My tank water has stayed very clear water for 3 weeks now.

These M Tetra filters fit my Aqua Culture filter. The amount of carbon does a great job of filtering. My tank water has stayed very clear water for 3 weeks now.


Rated 5 out of 5 stars
By Kathleen on Sep 28, 2025

Previously purshased

It's top of the line quaility for aquarium filters! I hope you never discontinue this item!

It's top of the line quaility for aquarium filters! I hope you never discontinue this item!


Rated 5 out of 5 stars
By lindsey on Mar 10, 2025

works

works like it's supposed to, straight forward

works like it's supposed to, straight forward


Rated 5 out of 5 stars
By Sandi on Oct 19, 2024

Good at keeping tank clean

I've used this type of filter for years. The combination of the charcoal and tablet help a lot to keep my tanks clean between regular maintenance.

I've used this type of filter for years. The combination of the charcoal and tablet help a lot to keep my tanks clean between regular maintenance.


Rated 5 out of 5 stars
By Dwayne on Feb 21, 2025

Fish enjoying clean living

The product works

The product works


Rated 5 out of 5 stars
By Cindy on Jan 26, 2025

Easy to use

Very convenient

Very convenient


Rated 5 out of 5 stars
By Candy on Nov 10, 2024

fish world

I now my fish loves it

I now my fish loves it


Rated 5 out of 5 stars
By George on Dec 12, 2024

I like the prices and the brand name

Great products

Great products


Rated 5 out of 5 stars
By Stephanie on Aug 29, 2024

Tetra bio bag aquarium filter cartridges

These are the best ever

These are the best ever


Rated 5 out of 5 stars
By jim on Feb 28, 2024

great price

I received the product fast,

I received the product fast,