---
product_id: 2309915
title: "Whisper Bio-Bag Medium Filter Cartridges for Aquariums, 3 Count | Ready to Use, Fits Tetra Whisper Fish Tank Filters 5-10 Gal, PF-10, IQ 10, Replace Monthly"
brand: "tetra"
price: "₨266"
currency: SCR
in_stock: true
reviews_count: 13
category: "Tetra"
url: https://www.desertcart.sc/products/2309915-whisper-bio-bag-medium-filter-cartridges-for-aquariums-3-count
store_origin: SC
region: Seychelles
---

# Fits Tetra Whisper filters 5-10 Gal, easy monthly swap Activated carbon removes odors & discoloration Dual-sided dense mesh traps debris Whisper Bio-Bag Medium Filter Cartridges for Aquariums, 3 Count | Ready to Use, Fits Tetra Whisper Fish Tank Filters 5-10 Gal, PF-10, IQ 10, Replace Monthly

**Brand:** tetra
**Price:** ₨266
**Availability:** ✅ In Stock

## Summary

> 🐠 Keep your aquarium whisper-quiet and crystal clear—because your fish deserve the best!

## Quick Answers

- **What is this?** Whisper Bio-Bag Medium Filter Cartridges for Aquariums, 3 Count | Ready to Use, Fits Tetra Whisper Fish Tank Filters 5-10 Gal, PF-10, IQ 10, Replace Monthly by tetra
- **How much does it cost?** ₨266 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/2309915-whisper-bio-bag-medium-filter-cartridges-for-aquariums-3-count)

## Best For

- tetra enthusiasts

## Why This Product

- Trusted tetra brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Ready When You Are:** Pre-assembled and ready-to-use cartridges make monthly replacements a breeze—no hassle, no mess.
- • **Stay Ahead of Clogs:** Replace monthly or sooner to maintain optimal water flow and a healthy aquatic environment.
- • **Dual Defense Filtration:** Dense, dual-sided mesh efficiently captures debris and fish waste, keeping your tank spotless.
- • **Effortless Compatibility:** Color-coded cartridges designed to perfectly fit Tetra Whisper filters for 5-10 gallon tanks.
- • **Crystal Clear Water, Always:** Ultra-Activated® carbon eliminates odors and discoloration for pristine aquariums.

## Overview

Tetra Whisper Bio-Bag Medium Filter Cartridges are pre-assembled, dual-sided mesh filters with Ultra-Activated® carbon that remove odors, discoloration, and debris from 5-10 gallon aquariums. Designed for easy monthly replacement, these color-coded cartridges fit Tetra Whisper PF-10, IQ 10, and similar filters, ensuring hassle-free maintenance and consistently clear water.

## Description

Tetra® Whisper® Bio-Bag® Disposable Filter Cartridges keep aquarium water crystal clear and remove odors and discoloration. The dense, dual-sided mesh catches debris and fish waste. Ultra-Activated® carbon absorbs odors. Use these replacement filter cartridges in your Tetra® water filter – each package is color-coded to make it simple to remember which size to purchase. These replacement filters are assembled and ready to use for your convenience. Clear water made simple. Rinse Tetra Whisper Bio-Bag Disposable Filter Cartridges under cool tap water to remove carbon dust. Open the lid of your filter and insert the Bio-Bag cartridge into the filter. Replace a clogged Bio-Bag filter cartridge when there is reduced water flow out of the filter. For best results, change your filter cartridge monthly or sooner if needed. Size medium. Choose the small size filter cartridge to fit the Tetra® Whisper® 3i Internal Filter; choose the medium cartridge to fit the Tetra Whisper PF10 Power Filter, 10i Internal Filter and Reptofilter® 90 GPH; and choose the large cartridge to fit the Tetra Whisper 20, 30, 40 and 60 Power Filters and 20i and 40i Internal Filters. Since 1951, Tetra has developed the world’s most comprehensive body of fish food knowledge, and fishkeeping enthusiasts have looked to the brand for products and solutions that add ease and beauty to their home. Whether you're an experienced hobbyist or just starting out, Tetra has everything you need – from a large variety of quality fish food and innovative equipment to test kits and decor.

Review: For very small extra effort you save a lot of money, a great value - We have two Tetra Whisper fish filters. These assemble-yourself filter cartridges or "bags" are, after assembly, the same as the ones you can buy ready to use but much, much cheaper. It is extremely easy to assemble them and everything you need is included, very nice and I think a "no brainer". NOTE: I recommend not following their assembly instructions in one respect. ("Assembly" means turning off the filter unit, removing the old, dirty cartridge to work on it, changing out the filter bag and charcoal [ditch the old, put in the new], and re-installing.) The instructions say to put the re-useable frame inside the bag first, then pour in the charcoal. I find that no matter how careful I am, some of the little charcoal particles spill out of the narrow opening or bounce off the frame as you pour and they wind up, (a.) not in the filter so less service life, and, (b.) on the floor or counter to be cleaned up. Instead, I recommend pouring the charcoal into the bag first with the bag "mouth" wide open and unobstructed, much easier and less mess and waste, then insert the frame into the bag. The only caveat is that with the charcoal in a pile at the bottom of the bag, the frame may not go down in all the way, so have to shake or flick the bag a bit then settle the frame in deeper once or twice, much as you might flick a single-serve paper bag of sugar to move sugar out of the way before tearing off the top. I haven't "autopsied" a factory-assembled bag vs one of these to confirm that they aren't cheating by putting in less charcoal, the price difference is so great that it's surprising, but they seem to work for as long as the factor-assembled ones. The box says "Made in U.S.A." so I hope we're not putting someone out of work by taking away their factory assembly job, but I'm sure the factory-assemble versions remain a major part of the market. We keep a few factory-assembled ones around for when we are away and the pet sitter may have to change cartridges, not they couldn't use these (not rocket science!) but we try to make it easier for them. For us, we use only these unassembled ones. The Whisper filters seem effective and are quiet. They do build up some crud over time and should be rinsed out once in a while, including taking off the bottom section (intake screen and pump), but other than that they seem good. Of course, the local pet store fish experts, who do seem to know their stuff, say that sometimes cleaning is good and eliminates crud that otherwise makes the water cloudy and the fish prone to infection, while other times cleaning removes "good" slime and organic material that are necessary to support or are part of the "good" bacteria that should be present in an aquarium to digest and remove ammonia and nitrates (i.e., piss-eating bacteria), since not having them results in impurity build-up in the water than can irritate, hurt, or ultimately kills the fish. But no one has been able to tell me how to tell good slime or crud from bad slime and crud beyond saying that if the tank water looks clear, don't sweat the slime, but if cloudy, that's bad. They also say to add "biological" treatments or additives when appropriate to establish or restore lost good bacteria, but then add that the "good" bacteria under some conditions can also make water cloudy and bad. Confused yet? So am I. At this point, I should say that I like hamsters and cats and dogs myself, but we have the fish for the kids (sigh) and we do the best we can. So if you have fish and this type of water filter, I would recommend these unassembled ones, they are sooo much less expensive than factory assembled, easy and very little trouble to assemble yourself, so you can save money and/or change filters cartridges more often. It's all good.
Review: Great filters. Awesome price - Works perfect

## Features

- REPLACEMENT CARBON FILTER: Keeps aquarium water crystal clear – removes odors and discoloration.
- CATCHES DEBRIS: Dense, dual-sided mesh filters debris and fish waste.
- FITS TETRA WHISPER WATER FILTERS: Color coded to make it simple to remember which replacement cartridge size to purchase.
- CONVENIENT: Replacement filter cartridges are fully assembled and ready to use.
- USAGE: Change monthly or sooner if needed.
- Conveniently Assembled and Ready-to-Use
- Like the unassembled, the-Packages are color-coded, making it easier than ever to remember which size to purchase
- Easy to Assemble, Easy to Replace
- Please read all label information on delivery

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0006JM09E |
| Allergen Information | Almonds Free |
| Best Sellers Rank | #1,245 in Pet Supplies ( See Top 100 in Pet Supplies ) #3 in Aquarium Filters |
| Brand | Tetra |
| Brand Name | Tetra |
| Customer Reviews | 4.7 out of 5 stars 28,224 Reviews |
| Global Trade Identification Number | 00046798261698 |
| Included Components | [Filter cartridges] |
| Item Form | Disposable Cartridge |
| Item Type Name | Replacement Filter |
| Item Weight | 3.84 ounces |
| Liquid Volume | 5 liters |
| Manufacturer | Tetra |
| Manufacturer Part Number | AQ-26169 |
| Model Number | 26169 |
| Number of Items | 1 |
| Pet Type | Fish |
| Target Species | Fish |
| UPC | 046798261698 |
| Unit Count | 3 Count |
| Warranty Description | See Label |

## Product Details

- **Brand:** Tetra
- **Item Form:** Disposable Cartridge
- **Item Weight:** 3.84 ounces
- **Liquid Volume:** 5 liters
- **Unit Count:** 3 Count

## Images

![Whisper Bio-Bag Medium Filter Cartridges for Aquariums, 3 Count | Ready to Use, Fits Tetra Whisper Fish Tank Filters 5-10 Gal, PF-10, IQ 10, Replace Monthly - Image 1](https://m.media-amazon.com/images/I/61DhQ+uwXDL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ For very small extra effort you save a lot of money, a great value
*by S***H on January 8, 2013*

We have two Tetra Whisper fish filters. These assemble-yourself filter cartridges or "bags" are, after assembly, the same as the ones you can buy ready to use but much, much cheaper. It is extremely easy to assemble them and everything you need is included, very nice and I think a "no brainer". NOTE: I recommend not following their assembly instructions in one respect. ("Assembly" means turning off the filter unit, removing the old, dirty cartridge to work on it, changing out the filter bag and charcoal [ditch the old, put in the new], and re-installing.) The instructions say to put the re-useable frame inside the bag first, then pour in the charcoal. I find that no matter how careful I am, some of the little charcoal particles spill out of the narrow opening or bounce off the frame as you pour and they wind up, (a.) not in the filter so less service life, and, (b.) on the floor or counter to be cleaned up. Instead, I recommend pouring the charcoal into the bag first with the bag "mouth" wide open and unobstructed, much easier and less mess and waste, then insert the frame into the bag. The only caveat is that with the charcoal in a pile at the bottom of the bag, the frame may not go down in all the way, so have to shake or flick the bag a bit then settle the frame in deeper once or twice, much as you might flick a single-serve paper bag of sugar to move sugar out of the way before tearing off the top. I haven't "autopsied" a factory-assembled bag vs one of these to confirm that they aren't cheating by putting in less charcoal, the price difference is so great that it's surprising, but they seem to work for as long as the factor-assembled ones. The box says "Made in U.S.A." so I hope we're not putting someone out of work by taking away their factory assembly job, but I'm sure the factory-assemble versions remain a major part of the market. We keep a few factory-assembled ones around for when we are away and the pet sitter may have to change cartridges, not they couldn't use these (not rocket science!) but we try to make it easier for them. For us, we use only these unassembled ones. The Whisper filters seem effective and are quiet. They do build up some crud over time and should be rinsed out once in a while, including taking off the bottom section (intake screen and pump), but other than that they seem good. Of course, the local pet store fish experts, who do seem to know their stuff, say that sometimes cleaning is good and eliminates crud that otherwise makes the water cloudy and the fish prone to infection, while other times cleaning removes "good" slime and organic material that are necessary to support or are part of the "good" bacteria that should be present in an aquarium to digest and remove ammonia and nitrates (i.e., piss-eating bacteria), since not having them results in impurity build-up in the water than can irritate, hurt, or ultimately kills the fish. But no one has been able to tell me how to tell good slime or crud from bad slime and crud beyond saying that if the tank water looks clear, don't sweat the slime, but if cloudy, that's bad. They also say to add "biological" treatments or additives when appropriate to establish or restore lost good bacteria, but then add that the "good" bacteria under some conditions can also make water cloudy and bad. Confused yet? So am I. At this point, I should say that I like hamsters and cats and dogs myself, but we have the fish for the kids (sigh) and we do the best we can. So if you have fish and this type of water filter, I would recommend these unassembled ones, they are sooo much less expensive than factory assembled, easy and very little trouble to assemble yourself, so you can save money and/or change filters cartridges more often. It's all good.

### ⭐⭐⭐⭐⭐ Great filters. Awesome price
*by C***Y on August 7, 2026*

Works perfect

### ⭐⭐⭐⭐⭐ Excellent filtration at a great price!
*by G***N on January 29, 2026*

Tetra always seems to make the best budget and just overall filters. I bought a bunch of the cheap usb pumps with filters elsewhere and I kept having algae spikes. Then I bought the tetra whisper and changed the filter out once and my fish tank has been clean ever since. Paired with the whisper, the filter is silent as a mouse. The filtration is excellent as mentioned. The filter doesn’t restrict the suction of the pump at all. It is functionally perfect and the assembly was nonexistent - put it in the pump assembly and away it goes! Will purchase again.

## Frequently Bought Together

- Tetra Whisper Bio-Bag Filter Aquarium Cartridges, Medium Filter for Freshwater and Marine Fish, Removes Odors and Discoloration, Ready to Use, 3 Medium Green Filters
- Tetra Whisper Internal Power Filter 5 To 10 Gallons, For aquariums, In-Tank Filtration With Air Pump, Black
- Tetra Water Cleaner Gravel Siphon for Aquariums, Easily Clean Freshwater Aquariums

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-09-10*