Tetra Bio-Bag Medium Disposable Filter Cartridges

By Tetra
Rated 4.7429 out of 5 stars

Cartridge Size:

Selected: Cartridge Size:

Cartridge Size:

Selected: Cartridge Size:


Selected: Size:


Selected: Size:

$7.20Chewy Price
$13.99Chewy Price
$6.84Autoship Price
Autoship (Save an extra 5%)

Why Autoship?

  • Save 5% on all future Autoship orders
  • Set your schedule based on your pet's needs
  • No fees, no commitments - skip, change or cancel anytime.
In Stock
FREE 1-3 day delivery on first-time orders over $35

About This Item


  • Convenient, easy-to-use, three-stage filtration cartridges designed to help keep your aquarium crystal clear.
  • Ensures mechanical and biological filtration.
  • Ultra-activated carbon works to absorb discoloration and odors, keeping your fish tank in tip-top condition.
  • Double-sided mesh is dense to trap fish waste and debris.
  • Disposable Bio-Bags are available in an 8-count and 12-count option.

See More


Compatible Products

Keep your system running smoothly with Tetra filters.

Frequently Bought Together

Tetra Whisper Aquarium Power Filter, 5-10 gal
Rated 2.7556 out of 5 stars
$14.98Chewy Price
Total Price: $35.17

Compare Similar Items

Customer Rating
Rated 4.7429 out of 5 stars
Rated 4.6104 out of 5 stars
Rated 4.4886 out of 5 stars
Rated 4.9 out of 5 stars
Rated 4.625 out of 5 stars
$7.20Chewy Price
$11.49Chewy Price
$3.89Chewy Price
$4.45Chewy Price
$2.82Chewy Price
$6.84Chewy Price
$10.92Chewy Price
$3.70Chewy Price
$4.23Chewy Price
$2.68Chewy Price
Fish TypeMarine Fish, Tropical FreshwaterMarine Fish, Tropical FreshwaterMarine Fish, Tropical FreshwaterTropical FreshwaterMarine Fish, Tropical Freshwater
Aquarium TypeSaltwater, FreshwaterSaltwater, FreshwaterSaltwater, FreshwaterSaltwater, FreshwaterSaltwater, Freshwater
MaterialSynthetic Fabric, MeshSynthetic Fabric, MeshSynthetic Fabric, MeshPlasticSynthetic Fabric, Mesh

Questions & Answers

9 Customer Questions

is this filter interchangeable for a top fin silent stream small filter cartridge 5.5 x 3.1?
Answer by ChewyJul 16, 2019
These Bio-Bags are designed to fit Tetra's Whisper Power Filters 10, 10i, E, J and Microfilter.

Do these fit 20 gallon top fin filters
Answer by ChewyDec 08, 2017
This product is compatible with the Whisper Power Filters 10, 10i, E, J and MicroFilter.

Do you really have to assemble them or are the already put together?
Answer by ChewyJan 30, 2018
Some assembly is required for this product. Remove Bio-Bag from filter, allowing excess water to drain into filter box. Remove clip from frame, fold up frame flap, and remove floss bag from frame. Place new floss bag over frame. Add one packet of Ultra-activated carbon. Fold flaps of Aerobic Frame over filter bag and replace clip. Rinse Bio-Bag, insert into filter, replace filter cover.

Would these work for the 5 gallon glofish tank?
Answer by ChewyJul 31, 2018
These cartridges are intended for the Whisper Power Filter package

ReviewsWrite a Review

Rated 4.7429 out of 5 stars
70 Ratings
Would recommend to a friend

68 Customer Reviews

Rated 5 out of 5 stars
By MAR on Nov 28, 2023

Easy to fill filter cartridges

Arrived safely, as described, I've been using these whisper cartridges Since 2008. You can fill them with other media other then carbon, as well as adjusting the amount of media to put. Depending of how much fish waist you get, or the number of fish in your tank. I mix ammonia granules with carbon granules.

Rated 2 out of 5 stars
By Carebear on Oct 15, 2023

Tank has never been so filthy

While these seem cost effective and easy to assemble, I would not recommend them at all! My tank was always well kept and the water was clear. After switching to these filters, following directions closely, in about a week the water started getting unbelievably cloudy and there's black stuff and algae growing everywhere!! I have to do a full water change/cleaning now and buy new filters because these are the only thing that changed so they must be the cause :(

Rated 5 out of 5 stars
By Ezra1 on Mar 13, 2023

Great Filter for 10 gallon aquarium

I am very pleased with this filter. It works for at least two weeks and keeps the tank clean. Highly recommend this product.

Rated 5 out of 5 stars
By lynn on Mar 11, 2023

Bio filters

Works great will order more thanx chewy have been with chewy for some time now

Rated 5 out of 5 stars
By Tengat on Nov 11, 2022

Good purchase!

Good price for good product and quick delivery. Very satisfied.

Rated 5 out of 5 stars
By carol on May 15, 2022

fish tank refills

love the filters and this weeks special. they were buy one get 50 off on another.

Rated 5 out of 5 stars
By Kimberly on Mar 13, 2022


Great value, a must for a healthy aquarium! Get proper size and follow easy directions.

Rated 5 out of 5 stars
By rosco on Oct 13, 2021

good prices

good product, good price, because i am disable and don't have lots of income and i love my fish, they keep my company.

Rated 5 out of 5 stars
By Susan on Dec 19, 2021

Great filters

These suck up junk like crazy and keep the water clear.

Rated 5 out of 5 stars
By JoPiggies24 on Aug 7, 2021

Tetra Bio bags

I love the item, easy to use n install. I just wish I bought the right size. When I tried to install it just didn't fit. Still new to this. Glad Chewy CSR was able to help me right size.