---
product_id: 325499712
title: "Whisper In-Tank Filter 40i with BioScrubber - 20-40 gallon (25818), Black"
brand: "tetra"
price: "R$1209"
currency: BRL
in_stock: true
url: https://www.desertcart.com.br/products/325499712-whisper-in-tank-filter-40i-with-bioscrubber-20-40-gallon
store_origin: BR
region: Brazil
---

# Sleek in-tank black design Dual-sided mesh debris catcher 170 GPH filtration power Whisper In-Tank Filter 40i with BioScrubber - 20-40 gallon (25818), Black

**Brand:** tetra
**Price:** R$1209
**Availability:** ✅ In Stock

## Summary

> 🖤 Silent power, sleek design — your aquarium’s new best friend.

## Quick Answers

- **What is this?** Whisper In-Tank Filter 40i with BioScrubber - 20-40 gallon (25818), Black by tetra
- **How much does it cost?** R$1209 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/325499712-whisper-in-tank-filter-40i-with-bioscrubber-20-40-gallon)

## 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

- • **Powerful 170 GPH Flow:** Efficient air-driven filtration keeps water crystal clear and oxygen-rich.
- • **Space-Savvy Flush Mount:** Mounts inside tank allowing placement flush against any wall—no bulky hangers.
- • **Whisper-Quiet Operation:** Submerged motor minimizes noise for a peaceful aquatic vibe.
- • **Easy Bio-Bag Cartridge Swap:** Large, user-friendly cartridges make maintenance a breeze—stay hassle-free.
- • **Versatile Water Level Adaptation:** Adjusts effortlessly to high or low water levels, perfect for diverse tank setups.

## Overview

The Tetra Whisper In-Tank Filter 40i is a compact, all-in-one internal filter and air pump designed for 20-40 gallon aquariums. Featuring a quiet submerged motor, it delivers up to 170 gallons per hour of oxygenated filtration through dual-sided mesh and easy-to-change Bio-Bag cartridges. Its inside-the-tank mounting system allows tanks to sit flush against walls, optimizing space without sacrificing performance.

## Description

Tetra Whisper In-Tank Filter 40i with BioScrubber - 20-40 gallon (25818), Black

## Features

- UNIVERSAL DESIGN: Tetra Whisper 40i 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 170 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Pet Type | Aquatics, Aquatics Filter Media, Aquatics Filter Media Filter Inserts, PetSupplies |
| Product Dimensions | 14.86 x 12.93 x 26.14 cm; 680.39 g |
| Batteries | Product Specific batteries required. |
| Item model number | AQ-65818 |
| Pet Life Stage | all ranges |
| Flavor | Flavorless |
| Item Form | Canister |
| Allergen Information | Gelatin Free |
| Color | black |
| Size | Up to 40-Gallons |
| Volume | 5 Liters |
| Number of Items | 1 |
| Quantity | 1 |
| Specific Uses | Active |
| batteries required | No |
| Batteries Included | No |
| Item Weight | 680 g |

## Images

![Whisper In-Tank Filter 40i with BioScrubber - 20-40 gallon (25818), Black - Image 1](https://m.media-amazon.com/images/I/81W+Z3JdNIL.jpg)

## Available Options

This product comes in different **Size Name** options.

## Frequently Bought Together

- Tetra Whisper Internal Filter 20 To 40 Gallons, For Aquariums, In-Tank Filtration With Air Pump
- Tetra Whisper Bio-Bag Filter Cartridges For Aquariums - Ready To Use BLUE, Large, 3 Count (Pack of 1)
- TetraFauna AquaSafe for Reptiles and Amphibians 3.38 Ounces, Aqua-Terrarium Water Conditioner, Makes Tap Water Safe

---

## 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.com.br/products/325499712-whisper-in-tank-filter-40i-with-bioscrubber-20-40-gallon](https://www.desertcart.com.br/products/325499712-whisper-in-tank-filter-40i-with-bioscrubber-20-40-gallon)

---

*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-01-23*