---
product_id: 13425518
title: "Tetra Whisper Internal Filter 10 To 30 Gallons, For aquariums, In-Tank Filtration With Air Pump"
brand: "tetra"
price: "465 kr"
currency: DKK
in_stock: true
url: https://www.desertcart.dk/products/13425518-tetra-whisper-internal-filter-10-to-30-gallons-for-aquariums
store_origin: DK
region: Denmark
---

# Dual-sided mesh filter 125 GPH flow rate Easy-change Bio-Bag Tetra Whisper Internal Filter 10 To 30 Gallons, For aquariums, In-Tank Filtration With Air Pump

**Brand:** tetra
**Price:** 465 kr
**Availability:** ✅ In Stock

## Summary

> 🌊 Dive into tranquility with TetraWhisper!

## Quick Answers

- **What is this?** Tetra Whisper Internal Filter 10 To 30 Gallons, For aquariums, In-Tank Filtration With Air Pump by tetra
- **How much does it cost?** 465 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/13425518-tetra-whisper-internal-filter-10-to-30-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

- • **Debris Defense:** Dual-sided mesh effectively captures debris and fish waste for a cleaner tank.
- • **Space-Saving Design:** Mounts inside your aquarium, allowing for flush placement against walls.
- • **Whisper Quiet Operation:** Enjoy a serene aquatic environment without disruptive noise.
- • **User-Friendly Maintenance:** Large Bio-Bag cartridges make filter changes a breeze.
- • **Efficient Filtration & Aeration:** Filters up to 125 gallons per hour while enriching water with oxygen.

## Overview

The TetraWhisper Internal Filter is designed for aquariums ranging from 10 to 30 gallons, combining an air pump and water filtration system in a compact, efficient unit. Its dual-sided mesh filter captures debris and fish waste, while its air-driven design ensures optimal water aeration. The filter mounts easily inside the tank, allowing for a sleek setup, and features user-friendly Bio-Bag cartridges for hassle-free maintenance.

## Description

Tetra Whisper Internal Filter 10 To 30 Gallons, For aquariums, In-Tank Filtration With Air Pump

## Features

- UNIVERSAL DESIGN: Tetra Whisper 20i Internal Filter is an all-in-one air pump and water filter system.
- INTERNAL FILTER: Mounts on the inside of your aquarium with clip (included).
- CATCHES DEBRIS: Dense, dual-sided mesh filters debris and fish waste.
- AERATES WATER: Air-driven design filters up to 125 GPH while oxygenating water.
- CONVENIENT DESIGN: Uses large easy to change Bio-Bag cartridges; filter mounts inside aquarium, making it possible to place tank flush against the wall.

## Images

![Tetra Whisper Internal Filter 10 To 30 Gallons, For aquariums, In-Tank Filtration With Air Pump - 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.

## 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)

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-01-23*