---
product_id: 411453568
title: "DC400-S-12"
brand: "clscea"
price: "E£ 3926"
currency: EGP
in_stock: null
reviews_count: 8
url: https://www.desertcart.com.eg/products/411453568-dc400-s-12
store_origin: EG
region: Egypt
---

# 100% Open Flow Design Transparent Visible Window Replaceable Diffuser Disc DC400-S-12

**Brand:** clscea
**Price:** E£ 3926
**Availability:** ❌ Out of Stock

## Summary

> 🌿 Elevate your planted tank game with precision CO2 diffusion!

## Quick Answers

- **What is this?** DC400-S-12 by clscea
- **How much does it cost?** E£ 3926 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.eg](https://www.desertcart.com.eg/products/411453568-dc400-s-12)

## Best For

- clscea enthusiasts

## Why This Product

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

## Key Features

- • **Crystal Clear Monitoring:** Transparent window lets you visually confirm CO2 diffusion in real-time—no guesswork needed.
- • **Efficient CO2 Dissolution:** Advanced design boosts CO2 absorption, saving you gas and enhancing plant growth.
- • **Flexible Connection Options:** Supports both horizontal and vertical setups to perfectly fit your filtration system.
- • **Seamless Inline Integration:** External installation keeps your aquarium clutter-free and maximizes tank space.
- • **Built-In Backflow Protection:** Integrated check valve prevents water backflow, ensuring hassle-free operation.

## Overview

This External Inline CO2 Diffuser Atomizer, crafted from durable aluminum alloy, features a 12mm connection and a 100% open flow design that maintains filter efficiency. Its transparent window allows easy monitoring, while the replaceable disc ensures long-term performance. With flexible connection options and a built-in check valve, it optimizes CO2 dissolution for healthier, vibrant aquatic plants without sacrificing tank space.

## Description

External Inline CO2 Diffuser Atomizer Aluminum Alloy for Planted Aquarium 12 mm

## Features

- 【Inline Design 】 100% Open Flow Design. There is no limit to the filter flow. Installed outside the tank, does not occupy the space in the tank, simple and neat.
- 【Clear and visible window】 Transparent and visible window, clearly see the work of the diffuser.
- 【Two connection version】 Support horizontal or vertical connection, customers choose the connection direction according to needs. Note: Need to be used with the filter!
- 【Replaceable disc】 The disk of the diffuser can be removed for cleaning or replaced. The ASIN of the replacement sheet is: B091DXVSHN
- 【High dissolution rate】 Experienced players know it better. The unique design dissolves CO2 more efficiently and saves CO2 more than in-tank CO2 diffusers.
- 【Built-in check valve】No additional check valve is required, built-in check valve pad, prevent water backflow.

## Product Details

- **Brand:** Clscea
- **Item Form:** Inline
- **Target Species:** 鱼
- **Manufacturer:** Clscea

## Images

![DC400-S-12 - Image 1](https://m.media-amazon.com/images/I/81VMot4Q36L.jpg)
![DC400-S-12 - Image 2](https://m.media-amazon.com/images/I/71rH5GNUpeL.jpg)
![DC400-S-12 - Image 3](https://m.media-amazon.com/images/I/61lPkY-ssrL.jpg)
![DC400-S-12 - Image 4](https://m.media-amazon.com/images/I/613GoneLi3L.jpg)
![DC400-S-12 - Image 5](https://m.media-amazon.com/images/I/61D6sVh60KL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ I Love This Diffuser
*by S***N on May 6, 2025*

I love this diffuser. It takes less than five minutes to install, it’s pretty cheap and you get a good even spread of co2.No annoying diffuser or bubble trail in the tank. Just a good co2 addition with nothing in the tank to take away from your aquascape. I also love that you can buy a replacement diffuser disk.They provide you with a method for cleaning and restoring the pad with bleach. If you’re going to use bleach to restore the diffuser disk soak it in a cup of water with two caps of dechlorinating solution for several hours after bleaching it. It will prevent you from killing your cycle.This diffuser produces really small micro bubbles which is exactly what you want. You’ll have to use less co2 also as it’s inline and most of it is dissolving into the water on the way to the tank.It’s worked perfectly for me and I love the viewing window so I can check the disk and know when it needs to be cleaned. It’s not bulky and it’s made of high quality materials.You cannot go wrong with this diffuser. If you’re filtering your tank well, you will rarely have to clean the disk. If you add Purigen to your canister filter as the last media before the water exits, it will remove most of the micro particles which would build up on the diffuser disk and you can reduce cleaning the disk to a couple of times per year. Purigen only costs about $13 and will save you a lot of hassle.Great diffuser, fair price, easy to set up, built in check valve. Go for it. I highly recommend this product.

### ⭐⭐⭐⭐⭐ Great small form factor co2 diffusion.
*by D***N on June 23, 2025*

Using this inline in my AIO tank. Don’t like the look of hang on diffusers. Low pressure required to operate which is nice for those on acid/bicarbonate generators. I run at 35psi and was able to reduce my BPS by 1.5 bubbles. Definitely more efficient. Well built and simple to maintain.

### ⭐⭐⭐⭐⭐ Calidad y durabilidad, poco mantenimiento
*by E***S on June 20, 2025*

Excelente difusor, lleve el de 16mm y el de 12, tras meses de uso sin mantenimiento funcionan correctamente

## Frequently Bought Together

- Clscea External Inline CO2 Diffuser Atomizer Aluminum Alloy for Planted Aquarium 12 mm
- FZONE Mini 10 inch Stainless Steel Filter Pipe Inflow and Outflow for Aquarium Plant Tank, Lily Pipes with Acrylic Pipe Fixer for 12/16mm Filter Tube (MINI-12MM)
- OASE Indoor Aquatics Filtosmart Thermo 100, Black

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*Product available on Desertcart Egypt*
*Store origin: EG*
*Last updated: 2026-01-23*