--- product_id: 2116011 title: "Tetra Whisper Bio-Bag Medium Filter Cartridges for Aquariums, 12 Count, Unassembled, Fits Tetra Whisper Fish Tank Filters 5-10 Gal, PF-10, IQ 10" brand: "tetra" price: "$22.85" currency: USD in_stock: true url: https://www.desertcart.us/products/2116011-tetra-whisper-bio-bag-medium-filter-cartridges-for-aquariums-12 store_origin: US region: United States of America --- # Carbon filter removes odors & discoloration Color-coded for easy size ID Dual-sided mesh traps debris Tetra Whisper Bio-Bag Medium Filter Cartridges for Aquariums, 12 Count, Unassembled, Fits Tetra Whisper Fish Tank Filters 5-10 Gal, PF-10, IQ 10 **Brand:** tetra **Price:** $22.85 **Availability:** ✅ In Stock ## Summary > 🐠 Keep your aquarium whisper-quiet and crystal clear—because your fish deserve the best! ## Quick Answers - **What is this?** Tetra Whisper Bio-Bag Medium Filter Cartridges for Aquariums, 12 Count, Unassembled, Fits Tetra Whisper Fish Tank Filters 5-10 Gal, PF-10, IQ 10 by tetra - **How much does it cost?** $22.85 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/2116011-tetra-whisper-bio-bag-medium-filter-cartridges-for-aquariums-12) ## 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 - • **Effortless Maintenance:** Color-coded cartridges make replacements quick and foolproof—no guesswork needed. - • **Dual-Sided Mesh Defense:** Dense mesh captures debris and fish waste, keeping your tank spotless. - • **Monthly Refresh Routine:** Designed for easy monthly swaps to maintain optimal water quality and fish health. - • **Crystal Clear Water, Always:** Advanced carbon filtration eliminates odors and discoloration for pristine aquariums. - • **Universal Fit for Tetra Whisper:** Specifically engineered to fit Tetra Whisper filters, ensuring seamless compatibility. ## Overview The Tetra Whisper Bio-Bag Filter Cartridges are medium-sized replacement carbon filters designed for freshwater and marine aquariums. Featuring dual-sided dense mesh, they effectively trap debris and fish waste while removing odors and discoloration. Color-coded for easy identification, these cartridges fit Tetra Whisper water filters and are simple to assemble and replace, recommended for monthly changes to maintain optimal water clarity and fish health. ## Description Tetra Whisper Bio-Bag Filter Cartridges For Aquariums - Unassembled Medium (Pack of 12) ## Features - UNASSEMBLED 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: Easy to assemble and easy to replace. - USAGE: Change monthly or sooner if needed. ## Technical Specifications | Specification | Value | |---------------|-------| | Item Weight | 6.4 ounces | | Liquid Volume | 5 Liters | | Target Species | Fish | | Item Form | Filter Part | | Allergen Information | Gluten Free | ## Product Details - **Brand:** Tetra - **Liquid Volume:** 5 Liters - **Item Weight:** 0.4 Pounds - **Item Form:** Filter Part - **Manufacturer:** Tetra ## Images ![Tetra Whisper Bio-Bag Medium Filter Cartridges for Aquariums, 12 Count, Unassembled, Fits Tetra Whisper Fish Tank Filters 5-10 Gal, PF-10, IQ 10 - Image 1](https://m.media-amazon.com/images/I/81UZyoZv11L.jpg) ## Available Options This product comes in different **Size, Style** options. ## Questions & Answers **Q: does anyone have the exact measurements for the X large + Medium filters? Thanks** A: Must be a secret - I sure don't understand why the seller doesn't clearly list the size.Whisper Bio-Bag Filters are slightly tapered in the drawing. Width dimensions are at the top.Large: 4.6 wide x 6.4 tallMedium/"Junior": 3.0 wide x 5.2 tallSmall: 2.1 wide x 3.8 tallFound dimensions on the Tetra website but not sure the link address will work here. Here is the PDF file link:http://cdn.spectrumbrands.com/~/media/UPG/Tetra/Aquarium/Equipment/Replacement%20Filter%20Cartridges/WhisperCartridges.ashxIf this doesn't work go to their website at: www.tetra-fish.com and search for "Tetra Whisper Unassembled Bio-Bag Filter Cartridges" **Q: Does it fit topfin power filter 10?** A: I bought these about a month ago for my top fin 10 filter. The cartridge in my top fin 10 is angled inward at the bottom whereas this filter cartridge is more of a rectangular shape. Due to the shape it does not fit the top fin 10 slot. However I kept my old cartridge frame and I'm using this product, everything works great. **Q: What is the difference between the 26164 and ATS26164? Both seem to be 12 large Whisper filter cartridges.** A: Hi, I use the Medium size whisper filter cartridges...the difference between the 26164 & ATS26164 could be the fact that one is a pre-assembled cartridge and the other is not. I buy the 12 pack of unassembled filters which are quite a bit cheaper and are the identical product. It comes with the white filters, one plastic insert, and small charcoal bags that take a few minutes to assemble. Hope this helps. **Q: medium size it's for 10 galons?** A: Hi Oscar, the medium size fits the Whisper PF10 and the Whisper 20 Power Filters. ## Frequently Bought Together - Tetra Whisper Bio-Bag Filter Cartridges for Aquariums, Medium Filter for Freshwater and Marine Fish, Removes Odors and Discoloration, Easy to Assemble, 12 Large Green Filters - Tetra Water Cleaner Gravel Siphon for Aquariums, Easily Clean Freshwater Aquariums --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/2116011-tetra-whisper-bio-bag-medium-filter-cartridges-for-aquariums-12](https://www.desertcart.us/products/2116011-tetra-whisper-bio-bag-medium-filter-cartridges-for-aquariums-12) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-04-24*