---
product_id: 145795337
title: "Fdit CO2 Cylinder W21.8 CGA320 Adapter Converter for Aquarium Fish CO2 W21.8 or CGA320 adapter converter(#1)"
brand: "fdit1"
price: "VT295"
currency: VUV
in_stock: true
reviews_count: 1
url: https://www.desertcart.vu/products/145795337-fdit-co2-cylinder-w21-8-cga320-adapter-converter-for-aquarium
store_origin: VU
region: Vanuatu
---

# Premium brass Stable performance Easy installation Fdit CO2 Cylinder W21.8 CGA320 Adapter Converter for Aquarium Fish CO2 W21.8 or CGA320 adapter converter(#1)

**Brand:** fdit1
**Price:** VT295
**Availability:** ✅ In Stock

## Summary

> 💡 Elevate Your Aquarium Game with Effortless CO2 Control!

## Quick Answers

- **What is this?** Fdit CO2 Cylinder W21.8 CGA320 Adapter Converter for Aquarium Fish CO2 W21.8 or CGA320 adapter converter(#1) by fdit1
- **How much does it cost?** VT295 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/145795337-fdit-co2-cylinder-w21-8-cga320-adapter-converter-for-aquarium)

## Best For

- fdit1 enthusiasts

## Why This Product

- Trusted fdit1 brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Tailored Fit Options:** Choose from two sizes to perfectly match your aquarium setup.
- • **User-Friendly Design:** No special skills required—install effortlessly by hand in minutes.
- • **Transform Your Aquarium:** Easily connect paintball CO2 to your keg system with this versatile adapter.
- • **Whisper-Quiet Operation:** Enjoy a serene aquatic environment with stable and noise-free performance.
- • **Durable Brass Construction:** Crafted from high-quality brass for long-lasting reliability and performance.

## Overview

The Fdit CO2 Cylinder W21.8 CGA320 Adapter Converter is a high-quality brass connector designed for aquarium enthusiasts. It allows for easy attachment of paintball CO2 to existing keg systems, ensuring stable and quiet operation. With user-friendly installation and two size options, this adapter is a must-have for any serious aquarist.

## Description



## Images

![Fdit CO2 Cylinder W21.8 CGA320 Adapter Converter for Aquarium Fish CO2 W21.8 or CGA320 adapter converter(#1) - Image 1](https://m.media-amazon.com/images/I/51-GSGMOeAL.jpg)
![Fdit CO2 Cylinder W21.8 CGA320 Adapter Converter for Aquarium Fish CO2 W21.8 or CGA320 adapter converter(#1) - Image 2](https://m.media-amazon.com/images/I/51+F805771L.jpg)
![Fdit CO2 Cylinder W21.8 CGA320 Adapter Converter for Aquarium Fish CO2 W21.8 or CGA320 adapter converter(#1) - Image 3](https://m.media-amazon.com/images/I/51Vqrljs5YL.jpg)
![Fdit CO2 Cylinder W21.8 CGA320 Adapter Converter for Aquarium Fish CO2 W21.8 or CGA320 adapter converter(#1) - Image 4](https://m.media-amazon.com/images/I/61oiwv2NirL.jpg)
![Fdit CO2 Cylinder W21.8 CGA320 Adapter Converter for Aquarium Fish CO2 W21.8 or CGA320 adapter converter(#1) - Image 5](https://m.media-amazon.com/images/I/61GEcNYnX2L.jpg)

## Questions & Answers

**Q: internal thread cga 320 which model**
A: Photos show option #1 as female cga320 to male w 21.8.

**Q: Cga320 (g1/2-14), outer thread: w21.8-14   #1 still is #2**
A: There have 2 type, Type1 is W21.8 convert to CGA320, Type2 is CGA320 convert to W21.8, thanks.

**Q: So #1 is for when my tank is w.21 and my regulator is cga 320 ? also is w.21 is like british #8 and din 477 ?**
A: Option #1 appears to be for a cga320 cylinder to a w 21.8 regulator and option #2 looks to be for a w 21.8 cylinder to a cga320 regulator.  Also, I think w 21.8 is a DIN 477 #6.

**Q: I have a tank with cga 320 and a hose with w21.8 which one so i get so i can hook these up?**
A: Option #1 threads on to a cga320 cylinder (standard carbon dioxide fitting in the U.S.) so that the W 21.8 can be threaded to it.

## Customer Reviews

### ⭐⭐⭐⭐ Clarification on #1 vs #2
*by Z***R on March 12, 2020*

Four stars for a poor product description, "converts" means different things to different people.Item #1 is female cga320 and male 21.8-14. Presumably #2 is the opposite.

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-05-06*