---
product_id: 59955620
title: "Middle"
brand: "aquaneat"
price: "128 kr"
currency: DKK
in_stock: null
reviews_count: 8
category: "Aquaneat"
url: https://www.desertcart.dk/products/59955620-middle
store_origin: DK
region: Denmark
---

# Quarter-cylinder shape boosts water & oxygen exchange Soft sponge traps debris, safe for delicate fish Easy setup & maintenance with simple air pump connection Middle

**Brand:** aquaneat
**Price:** 128 kr
**Availability:** ❌ Out of Stock

## Summary

> 🧜‍♂️ Elevate your aquarium game with silent, safe, and sleek filtration!

## Quick Answers

- **What is this?** Middle by aquaneat
- **How much does it cost?** 128 kr with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/59955620-middle)

## Best For

- aquaneat enthusiasts

## Why This Product

- Trusted aquaneat brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Discreet:** Slim profile fits neatly in tank corners, preserving your aquarium’s aesthetic and space.
- • **Fish-Friendly & Safe:** Gentle sponge material prevents fish suction, ideal for bettas, guppies, and fry tanks.
- • **Optimized for Small Tanks:** Perfectly sized for tanks up to 15 gallons, supporting healthy aquatic environments.
- • **Maximized Filtration Efficiency:** Innovative quarter-cylinder design expands surface area for superior bio and mechanical filtration.
- • **Effortless Installation & Cleaning:** Plug-and-play setup with airline tubing; sponge rinses easily without hassle.

## Overview

The AQUANEAT Middle Bio Corner Sponge Filter features a unique quarter-cylinder shape that enhances water and oxygen exchange, providing both mechanical and biological filtration. Designed with soft sponge material, it ensures safety for small and delicate fish species by minimizing current and preventing fish suction. Easy to install and clean, this compact filter fits tanks up to 15 gallons, making it an ideal choice for breeding, maternity, and nano fish tanks.

## Description

desertcart.com: AQUANEAT Aquarium Bio Corner Sponge Filter, for Breeding Shrimp Nano Fish Tank, up to 15Gal : Pet Supplies

Review: Good Filter for a 5.5 Gallon Tank - The small size (up to 10 gallons) is perfect for a 5.5 gallon betta tank. It's quite small so it doesn't take up too much room. It'd be easy to hide in a planted tank or with some driftwood. The base is heavy and it stays at the bottom after the sponge fills with water. I paired it with the Nicrew Air Pump and it's working great.
Review: Good shrimp tank filter - Works well with the micro hygger air pump. It’s doing a great job keeping a 5.6 gal tank clear and clean.

## Features

- New design: quarter-cylinder shape increases the surface area to get a better water and oxygen exchange rate. It also make the filter easy to hide in the corner of a tank
- Sponge filter provide both mechanical and bio filtration, also, the air infusion chamber produces minute bubbles which increase the oxygen solubility
- Safe for fish: soft sponge material, traps floating debris and won't suck up your fish, excellent for small size fish like betta, dwarf cichlid, guppy, killifish etc., or for hatcheries, maternity tanks, and fry tanks, as the filter produces minimal current and has almost no way to suck the fish through the filter
- Easy to set up & clean: simply install an airline into the unit and turn on the air pump, simply rinse and squeeze sponge in tank water
- Recommend tank size: up to 15 gallon; Dimension: 2.25"Lx2.25"Wx6.25"H

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B078X74T9M |
| ASIN  | B078X74T9M |
| Best Sellers Rank | #13,679 in Pet Supplies ( See Top 100 in Pet Supplies ) #113 in Aquarium Filter Accessories |
| Brand Name | AQUANEAT |
| Customer Reviews | 4.6 4.6 out of 5 stars (2,074) |
| Date First Available | January 9, 2018 |
| Date First Available  | January 9, 2018 |
| Is Discontinued By Manufacturer  | No |
| Item Package Dimensions L x W x H | 4.33 x 2.44 x 2.44 inches |
| Item Weight | 6.1 ounces |
| Item model number | SF-A229 |
| Item model number  | SF-A229 |
| Manufacturer | AQUANEAT |
| Manufacturer  | AQUANEAT |
| Package Dimensions  | 4.33 x 2.44 x 2.44 inches; 6.07 ounces |
| Size | Middle up to 15Gal |
| Target Audience Keyword | fish |

## Images

![Middle - Image 1](https://m.media-amazon.com/images/I/612nVJ5lccL.jpg)
![Middle - Image 2](https://m.media-amazon.com/images/I/61fHcTpsLwL.jpg)
![Middle - Image 3](https://m.media-amazon.com/images/I/61Fv22RRI-L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good Filter for a 5.5 Gallon Tank
*by H***H on November 16, 2025*

The small size (up to 10 gallons) is perfect for a 5.5 gallon betta tank. It's quite small so it doesn't take up too much room. It'd be easy to hide in a planted tank or with some driftwood. The base is heavy and it stays at the bottom after the sponge fills with water. I paired it with the Nicrew Air Pump and it's working great.

### ⭐⭐⭐⭐⭐ Good shrimp tank filter
*by A***N on January 12, 2026*

Works well with the micro hygger air pump. It’s doing a great job keeping a 5.6 gal tank clear and clean.

### ⭐⭐⭐⭐⭐ Best for small tanks!
*by J***D on June 29, 2025*

This sponge filter is PERFECT for smaller tanks!! I have had it in a 3 gallon betta tank, and now have one in his upgraded 6 gallon. Since it's a short and stout sponge, it's easy to hide with plants and hardscape! Works great at keeping the tank clear and clean, and doesn't make much noise on top of that. Would 100% get again.

## Frequently Bought Together

- AQUANEAT Aquarium Bio Corner Sponge Filter, for Breeding Shrimp Nano Fish Tank, up to 15Gal
- Uniclife Aquarium Air Pump Dual Outlet Fish Tank Aerator with Accessories for 5-200 Gallon Tank
- AQUANEAT Aquarium Tubing 25 Feet Clear, Airline Tubing, Standard 3/16” Air Hose for Fish Tank Air Pump,Hydroponics,Pond

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**Shop now:** [https://www.desertcart.dk/products/59955620-middle](https://www.desertcart.dk/products/59955620-middle)

---

*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-03-04*