--- product_id: 13425518 title: "Whisper 135 GPH Internal Power Filter For Aquariums" brand: "tetra" price: "€ 111.52" currency: EUR in_stock: true reviews_count: 13 category: "Tetra" url: https://www.desertcart.be/products/13425518-whisper-135-gph-internal-power-filter-for-aquariums store_origin: BE region: Belgium --- # 135 GPH ultra-quiet flow space-saving internal clip design 3-stage bio & carbon filtration Whisper 135 GPH Internal Power Filter For Aquariums **Brand:** tetra **Price:** € 111.52 **Availability:** ✅ In Stock ## Summary > 💧 Elevate your aquarium game with whisper-quiet, powerhouse filtration! ## Quick Answers - **What is this?** Whisper 135 GPH Internal Power Filter For Aquariums by tetra - **How much does it cost?** € 111.52 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/13425518-whisper-135-gph-internal-power-filter-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 - • **Sleek, Space-Smart:** Mounts inside tank, allowing aquarium to sit just 1” from the wall—minimal footprint, max style. - • **Triple-Action Clean:** BioBag cartridge floss traps debris while activated carbon removes odors & discoloration. - • **Whisper-Quiet Power:** 135 gallons per hour filtration with near-silent motor for peaceful aquatic vibes. - • **Hassle-Free Maintenance:** Easy-to-change filter cartridges keep your tank pristine without interrupting your flow. - • **Effortless Adjustability:** Customizable clip adapts to any water level for perfect filtration positioning. ## Overview The Tetra Whisper 135 GPH Internal Power Filter is a compact, submersible filtration system designed for 10- to 30-gallon aquariums. It delivers powerful, quiet water flow through a 3-stage filtration process using BioBag cartridges and activated carbon to trap debris and eliminate odors. Its space-saving internal clip design allows tanks to be placed flush against walls, while adjustable mounting ensures optimal performance at varying water levels. Ideal for professionals seeking efficient, low-maintenance aquarium care with a sleek, unobtrusive profile. ## 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: Love, Love This Filter! - Okay so... I have a 20 gallon temporarily for my 4 inch turtle. I accidentally bought the smallest of this tetra filter, so I bought the medium sized one in it's place. I had only had the tank filled halfway anyway since my turtle was only 1.5 inches at this point. Mind you I didn't realize how fast they grow, and had no idea that Its recommended to have a filter that can filter 2 to 3x the tank size. So I decided to keep both filters in my tank. One on each side. Even though I still don't reach the recommended filter size, my water now almost filled to the top, stays absolutely clean. Turtles are pretty messy so I still have to do the weekly cleanings and all that extra stuff that apparently those who spend hundreds of dollars on filters still have to do as well. I don't know if this is some kind of luck thing, I don't know if maybe my turtle just isn't that dirty (yea right, I see him)... but I'm actually not looking forward to switching out my filter for the 'recommended' filter size, as these filters work so good. I love them. They are both very quiet. Aside from the sound of the water falling back in.. I mean it sounds like a waterfall. Who doesn't want to hear a waterfall? I love it. This can also be prevented by raising the water level or lowering the filter itself. Basically the closer it is to the water, the quieter it is. Such a simple device, yet so beautifully sufficient. The little one stopped working at one point and I thought... welp there you go! Get what you pay for. But nope! Removed the base, pulled out the magnetic spring propeller and tube, cleaned it out and like magic it started right up as soon as I plugged it back in. Love how easy it is to replace the filters. The filters themselves are great and definitely hold on to some dirtiness. One thing I'll say is there is quite a bit of unused empty space. I now take advantage by adding some extra media, but I must say that these filters work great even without the extra. Love this filter and would recommend above any other filter. Review: Easy to use - This is my 3rd filter and finally found one I love. This is quiet and so easy to change out. The only thing I dont like is how low it sits in the tank. Wish the design allowed it to go higher up. ## 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 | | Best Sellers Rank | #1,571 in Pet Supplies ( See Top 100 in Pet Supplies ) #2 in Aquarium Filters | | Brand | Tetra | | Brand Name | Tetra | | Color | Black | | Customer Reviews | 4.2 out of 5 stars 22,607 Reviews | | EU Spare Part Availability Duration | 1 years | | Global Trade Identification Number | 00046798258179 | | Included Components | Aquaria 75025817: Tetra Whisper 20I Internal Filter | | Item Dimensions L x W x H | 10.2"L x 4.9"W x 10.2"H | | Item Highlight | For Fish Tanks Up To 30 Gallons, Whisper Quiet, 3-Stage Filtration, Space-Saving Internal Filter Clips on Tank | | Item Type Name | Aquarium Filter | | Item Weight | 1.5 pounds | | Manufacturer | Tetra | | Manufacturer Part Number | AQ-65817 | | Manufacturer Warranty Description | See label | | Material | 100% Polyester | | Material Type | 100% Polyester | | Model Number | 25817 | | Number of Items | 1 | | Number of Packs | 1 | | Product Dimensions | 10.2"L x 4.9"W x 10.2"H | | Product Style | Submersible | | Specific Uses For Product | Indoor | | Style | Submersible | | UPC | 046798258179 | | Unit Count | 1 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 ![Whisper 135 GPH Internal Power Filter For Aquariums - Image 1](https://m.media-amazon.com/images/I/81g1VKwt4dL.jpg) ## Available Options This product comes in different **Size** options. ## 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 ### ⭐⭐⭐⭐⭐ Love, Love This Filter! *by T***R on September 29, 2023* Okay so... I have a 20 gallon temporarily for my 4 inch turtle. I accidentally bought the smallest of this tetra filter, so I bought the medium sized one in it's place. I had only had the tank filled halfway anyway since my turtle was only 1.5 inches at this point. Mind you I didn't realize how fast they grow, and had no idea that Its recommended to have a filter that can filter 2 to 3x the tank size. So I decided to keep both filters in my tank. One on each side. Even though I still don't reach the recommended filter size, my water now almost filled to the top, stays absolutely clean. Turtles are pretty messy so I still have to do the weekly cleanings and all that extra stuff that apparently those who spend hundreds of dollars on filters still have to do as well. I don't know if this is some kind of luck thing, I don't know if maybe my turtle just isn't that dirty (yea right, I see him)... but I'm actually not looking forward to switching out my filter for the 'recommended' filter size, as these filters work so good. I love them. They are both very quiet. Aside from the sound of the water falling back in.. I mean it sounds like a waterfall. Who doesn't want to hear a waterfall? I love it. This can also be prevented by raising the water level or lowering the filter itself. Basically the closer it is to the water, the quieter it is. Such a simple device, yet so beautifully sufficient. The little one stopped working at one point and I thought... welp there you go! Get what you pay for. But nope! Removed the base, pulled out the magnetic spring propeller and tube, cleaned it out and like magic it started right up as soon as I plugged it back in. Love how easy it is to replace the filters. The filters themselves are great and definitely hold on to some dirtiness. One thing I'll say is there is quite a bit of unused empty space. I now take advantage by adding some extra media, but I must say that these filters work great even without the extra. Love this filter and would recommend above any other filter. ### ⭐⭐⭐⭐⭐ Easy to use *by R***H on September 6, 2026* This is my 3rd filter and finally found one I love. This is quiet and so easy to change out. The only thing I dont like is how low it sits in the tank. Wish the design allowed it to go higher up. ### ⭐⭐⭐⭐⭐ Great Budget Filter—Super Easy to Use *by R***R on June 17, 2026* I love this filter! It is super easy to set up and works great. I literally just clipped it inside my tank, plugged it in, and it was good to go. It keeps the water crystal clear and is surprisingly quiet as long as you keep your water level up. Perfect for small tanks and anyone who wants a no-fuss setup. Definitely recommend! ## 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.be/products/13425518-whisper-135-gph-internal-power-filter-for-aquariums](https://www.desertcart.be/products/13425518-whisper-135-gph-internal-power-filter-for-aquariums) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-09-18*