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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

  • Based on 40,315 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Monday, Jan 5
Order within 7 hours and 57 minutes
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Size: Medium


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

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.

Brand: Tetra


Material: Plastic


Tank Volume: 60 Gallons


Special Feature: Lightweight


Product Dimensions: 3.5"L x 3.5"W x 5.75"H


Item Weight: 0.24 Pounds


Shape: Rectangular


Specific Uses For Product: Filter


Style: 3 Count


Color: Multicolored


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 3.5 x 3.5 x 6.5 inches; 3.84 ounces


Item model number ‏ : ‎ 26169


Department ‏ : ‎ Unisex-Adult


Batteries ‏ : ‎ Product Specific batteries required.


Date First Available ‏ : ‎ June 15, 2004


Manufacturer ‏ : ‎ Tetra


Best Sellers Rank: #1,950 in Pet Supplies (See Top 100 in Pet Supplies) #2 in Aquarium Filters


#2 in Aquarium Filters:


Item Weight: 3.84 ounces


Department: Unisex-Adult


Manufacturer: Tetra


Item model number: 26169


Batteries: Product Specific batteries required.


Date First Available: June 15, 2004


Item Package Dimensions L x W x H: 5.97 x 3.62 x 3.58 inches


Item Dimensions LxWxH: 3.5 x 3.5 x 6.5 inches


Item Weight: 0.24 Pounds


Brand Name: Tetra


Target Audience Keyword: ( reptiles | amphibians ), fish


Directions: See label for details


Country of Origin: United States


Warranty Description: See Label


Model Name: Replacement Filter


Color: Multicolored


Size: Medium


Material: Plastic


Age Range Description: all ranges


Care Instructions: disposable


Number of Items: 1


Style: 3 Count


Included Components: [Filter cartridges]


Specific Uses for Product: Filter


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Jan 5

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Keeps My Aquarium Crystal Clear
Size: Medium
These filters work perfectly! They keep the water clean and clear, and they’re super easy to replace. Great value for the price!
Reviewed in the United States on October 12, 2025 by Ana Ana

  • good filter and price
Size: Medium
they work well
Reviewed in the United States on October 19, 2025 by O. Weale

  • Good product
Size: Medium
Good product for my turtle tank.
Reviewed in the United States on December 7, 2025 by GT

  • Great for the price
Size: Medium
They are the exact filter for my hob filter.. would totally recommend to anyone who replaces their filter. I started making my own so no longer use these but they are exactly as described
Reviewed in the United States on August 19, 2025 by Caleb&Angii

  • Works well
Size: Medium
It's good at catching any dirt or debris in the tank and the filters last for a while. The main downside is that filters are covered in charcoal and need to be rinsed thoroughly before use or the new tank water turns gray upon use.
Reviewed in the United States on April 6, 2023 by Iris

  • Perfect fit, quick shipping.
Size: Medium
Amazon is amazing. Such quick shipping. Thanks to all the hard working employees. The filters are very good and ready to use, no messy charcoal to mess with. I recommend this seller.
Reviewed in the United States on October 14, 2025 by Roz & Dale Miller

  • Filter cleaning system
Size: Medium
Filters works amazing like them will definitely get more
Reviewed in the United States on November 3, 2025 by D Money

  • My water is crystal clearn
Size: Medium
These are amazing! Fish tank water was tea-colored for months with a different filter .. put these in and in 2 days water is CRYSTAL CLEAR .. amazing. Didn’t even have to change the water.
Reviewed in the United States on December 19, 2025 by Jessica Taylor

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