--- product_id: 250498430 title: "Tetra Whisper Internal Filter 10 To 20 Gallons, For aquariums, In-Tank Filtration With Air Pump" brand: "tetra" price: "R3122" currency: ZAR in_stock: true reviews_count: 6 category: "Tetra" url: https://www.desertcart.co.za/products/250498430-tetra-whisper-internal-filter-10-to-20-gallons-for-aquariums store_origin: ZA region: South Africa --- # 135 GPH ultra-quiet pump Whisper BioBag cartridge filtration Space-saving in-tank design Tetra Whisper Internal Filter 10 To 20 Gallons, For aquariums, In-Tank Filtration With Air Pump **Brand:** tetra **Price:** R3122 **Availability:** ✅ In Stock ## Summary > 💧 Silence meets power: Filter smarter, not louder. ## Quick Answers - **What is this?** Tetra Whisper Internal Filter 10 To 20 Gallons, For aquariums, In-Tank Filtration With Air Pump by tetra - **How much does it cost?** R3122 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/250498430-tetra-whisper-internal-filter-10-to-20-gallons-for-aquariums) ## 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 - • **Whisper-Quiet Power:** Experience powerful 135 GPH filtration without the noise—your aquatic oasis stays serene. - • **All-in-One Convenience:** Internal filter with built-in air pump keeps your aquarium fresh and vibrant without external clutter. - • **Sleek, Space-Smart Setup:** Mount your tank flush against the wall with a discreet internal filter that blends seamlessly with your décor. - • **Advanced BioBag Filtration:** Trap debris and eliminate odors with easy-to-change, ultra-activated carbon cartridges for crystal-clear water. - • **Effortless Water Level Adjustment:** Flexible clip design adapts to any tank height, ensuring optimal filtration whether water is high or low. ## Overview The Tetra Whisper Internal Filter is a submersible, air-powered filtration system designed for 10- to 30-gallon aquariums. It delivers a quiet yet powerful 135 gallons per hour flow rate through easy-to-replace Whisper BioBag cartridges that trap debris and remove odors. Its space-saving internal design allows tanks to sit just 1 inch from walls, while adjustable mounting clips accommodate varying water levels, making it ideal for sleek, low-profile aquarium setups. ## Description For the ultimate in convenience and quiet, choose a Whisper In-Tank Filter. These filters mount on the inside of the aquarium, rather than hanging from the outside -- making it possible to place the tank flush against a wall. In-Tank Filters are unusually quiet, since the motor is under the water. Offering the same quality and performance as an external filter, the Whisper In-Tank Filter will function in as little as 2 inches of water -- making it ideal for turtle tanks, or for creating a waterfall inside the tank.The Whisper In-Tank filter features adjusts easily to high or low water levels with mounting suction cups and/or bracket. Each filter comes with one pre-assembled Whisper Bio-Bag filter cartridge. Review: Pump burned - Worst pump ever within 20 mins of usage it burned and stopped working Review: Great buy - Works great, no noise and tank is cleaner. ## Features - INTERNAL POWER FILTER: Tetra Whisper Internal Power Filter for 10- to 30-gallon aquariums uses large Whisper BioBag filter cartridges that are easy to change. - QUIET 135 GPH MOTOR: The internal pump efficiently filters up to 135 gallons per hour. - POWERFUL FILTRATION: Water flows through the cartridge floss, trapping debris and fish waste, while Ultra-activated carbon helps remove odor and discoloration. - SPACE-SAVING DESIGN: Your aquarium can be 1” from the wall with the internal filter designed to clip directly on your aquarium wall and be hidden by décor. - EASILY ADJUSTABLE: Adjustable clip allows for a variety of setups to easily adjust to high or low water levels. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0002DHYG8 | | Brand | Tetra | | Brand Name | Tetra | | Colour | Blacks & Grays | | Country of Publication | USA | | Customer Reviews | 4.4 out of 5 stars 5,085 Reviews | | EU Spare Part Availability Duration | 1 Years | | Global Trade Identification Number | 00046798258179 | | Included Components | Tetra Whisper Internal Filter 10 To 30 Gallons, For aquariums, In-Tank Filtration With Air Pump | | Item Dimensions L x W x H | 25.9L x 12.4W x 25.9H Centimeters | | Item Type Name | Tetra Whisper Internal Filter | | Item Weight | 658 g | | Manufacturer | Tetra | | Manufacturer Part Number | AQ-65817 | | Material | 100% Polyester | | Material Type | 100% Polyester | | Model Number | 25817 | | Number of Items | 1 | | Number of Packs | 1 | | Power Source | Air Powered | | Product Dimensions | 25.9L x 12.4W x 25.9H Centimeters | | Product Style | Submersible | | Specific Uses For Product | Active | | Style | Submersible | | UPC | 046798258179 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Tetra - **Color:** Black - **EU Spare Part Availability Duration:** 1 years - **Global Trade Identification Number:** 00046798258179 - **Item Weight:** 1.5 pounds - **Manufacturer:** Tetra - **Material:** 100% Polyester - **Number of Packs:** 1 - **Product Dimensions:** 10.2"L x 4.9"W x 10.2"H - **Style:** Submersible ## Images ![Tetra Whisper Internal Filter 10 To 20 Gallons, For aquariums, In-Tank Filtration With Air Pump - Image 1](https://m.media-amazon.com/images/I/81g1VKwt4dL.jpg) ![Tetra Whisper Internal Filter 10 To 20 Gallons, For aquariums, In-Tank Filtration With Air Pump - Image 2](https://m.media-amazon.com/images/I/41TPEHZxpRL.jpg) ![Tetra Whisper Internal Filter 10 To 20 Gallons, For aquariums, In-Tank Filtration With Air Pump - Image 3](https://m.media-amazon.com/images/I/71aTfYPCGIL.jpg) ![Tetra Whisper Internal Filter 10 To 20 Gallons, For aquariums, In-Tank Filtration With Air Pump - Image 4](https://m.media-amazon.com/images/I/51PTT5eqAQL.jpg) ![Tetra Whisper Internal Filter 10 To 20 Gallons, For aquariums, In-Tank Filtration With Air Pump - Image 5](https://m.media-amazon.com/images/I/810UwBWHt3L.jpg) ## Questions & Answers **Q: What size replacement filter cartridge for this unit...small, med?** A: The Tetra Bio-Bag Large (formerly known as Regular) are the exact same as the filter bag supplied with the Tetra Whisper In-Tank filter 20i. I got both from Amazon: filter $11.89; 12 cartridges $12.28. These filters last a long time, can be cleaned and reused. For my purpose, this filter has been great. **Q: Where can I just get the Bioscrubber?** A: Hello. You can get it at a pet store, amazon has some, grocery stores with a pet section...they are pretty easy to find. **Q: Would a small fish get sucked up in this filter? I have a 2 month old beta who is just recently getting color fins but still very small** A: Yes. I had 4 neon tetras and all 4 ended up getting sucked into the filter and the spinning fan mechanism blended them into multiple pieces. It happened the first night, I woke up and 4 fish were missing. I found them in the filter :( **Q: Would this filter be too strong for a Betta in a 10 gallon tank?** A: Yes, it would be fine. It is rated at 90 GPH which is the appropriate flow rate for a 10 gallon tank. Bettas are not the strongest swimmers, it is true, but typically handle filtration fine, as long as it is placed at one end of the tank so they have room to move away if necessary. They eventually adapt and will often play in the flowing water. Initially, you might want to place tall plants or tall décor in front of it to break up the flow until the betta becomes accustomed to it. For additional assistance, please call the Tetra Consumer Relations Team at 1-800-526-0650. ## Customer Reviews ### ⭐ Pump burned *by V***. on 20 January 2019* Worst pump ever within 20 mins of usage it burned and stopped working ### ⭐⭐⭐⭐⭐ Great buy *by R***X on 22 February 2026* Works great, no noise and tank is cleaner. ### ⭐ 110 V elektriğiniz yoksa almayın *by A***L on 27 January 2026* 110 V için üretilmiş ürün, 220 V ile sesli çalışıyor ve sonrasında yanarak kullanılmaz hâle geliyor. ## Frequently Bought Together - Tetra Whisper Internal Filter 10 To 30 Gallons, For aquariums, In-Tank Filtration With Air Pump - API TAP WATER CONDITIONER Aquarium Water Conditioner 16-Ounce Bottle - Tetra Whisper Easy to Use Air Pump for Aquariums (Non-UL) --- ## 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.co.za/products/250498430-tetra-whisper-internal-filter-10-to-20-gallons-for-aquariums](https://www.desertcart.co.za/products/250498430-tetra-whisper-internal-filter-10-to-20-gallons-for-aquariums) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-09-27*