---
product_id: 551310210
title: "Aquarium CO2 Bubble Counter with Built-in Check Valve for CO2 Generator Regulator, Single Head"
brand: "clscea"
price: "€ 66.19"
currency: EUR
in_stock: false
reviews_count: 5
category: "Clscea"
url: https://www.desertcart.nl/products/551310210-aquarium-co2-bubble-counter-with-built-in-check-valve-co2
store_origin: NL
region: Netherlands
---

# Built-in check valve prevents back-siphoning Screw connection for universal fit Durable aluminum alloy & PC construction Aquarium CO2 Bubble Counter with Built-in Check Valve for CO2 Generator Regulator, Single Head

**Brand:** clscea
**Price:** € 66.19
**Availability:** ❌ Out of Stock

## Summary

> 💨 Bubble up your aquarium game with precision and style!

## Quick Answers

- **What is this?** Aquarium CO2 Bubble Counter with Built-in Check Valve for CO2 Generator Regulator, Single Head by clscea
- **How much does it cost?** € 66.19 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/551310210-aquarium-co2-bubble-counter-with-built-in-check-valve-co2)

## 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

- • **Effortless Setup:** Simple screw connection and clear instructions get you running in minutes
- • **Leak-Proof Design:** Built-in high-quality check valve prevents backflow and protects your system
- • **Robust Durability:** Aluminum alloy ends and pressure-resistant PC cylinder ensure long-lasting performance
- • **Precision Flow Control:** Accurately monitor and adjust CO2 bubbles for optimal aquarium health
- • **Universal Compatibility:** Fits 4/6mm CO2 tubing and most needle valves for seamless integration

## Overview

This Aquarium CO2 Bubble Counter features a screw connection compatible with most CO2 needle valves, a built-in check valve to prevent back-siphoning, and a durable design using aluminum alloy and pressure-resistant PC materials. It accurately monitors CO2 flow rates to maintain a healthy aquatic environment, fits standard 4/6mm tubing, and offers easy installation and reliable leak-proof performance.

## Description

A bubble counter is an important accessory in a CO2 system. Choosing a premium accessory is vitally important. INSTRUCTION: 1 Screw the bubble counter onto the needle valve. 2 Unscrew the top cap and fill 3/4 with water, firmly screw the top back on. 3 Unscrew the compression collar from the top of the bubble counter, feed tubing through the collar, and firmly tighten to hold the tubing in place. 4 Use the regulator's needle valve to adjust the flow rate. 5 Count the number of bubbles going through the bubble counter and adjust the flow accordingly. PACKAGE INCLUDED: 1 x Bubble Counter

Review: Work great good quality affordable I have 2 no leaks just a product overall
Review: Not too expensive. Has a small o-ring inside it--have no idea how to use it. Anyways, installed it and there are no leaks. I would NOT recommend you unscrew the bottom. THe check valve parts will fall out and can be lost easily. Don't do it!!!

## Features

- Screw connection, compatible with many CO2 needle valves. Easy to set up.
- Built-in high-quality check valve to prevent back-siphoning. The bubble counter is designed to accurately monitor air-flow rate, it helps to keep and maintain a healthy aquarium.
- DURABLE: Both ends are made of aluminum alloy to avoid softening or breaking; The middle transparent cylinder is made of PC, injection molding mode, more robust, safer and more pressure-resistant than acrylic or other materials.
- It needs to be filled ¾ with water before use. Compatible with 4/6mm (3/16" inner diameter) Co2 tubing.
- Quality inspection, rather than random inspection! We are serious about quality control and buyer experience! If there are any questions, suggestions or ideas, please feel free to contact us.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08YN78W8C |
| Batteries Included | No |
| Color | single-head |
| Customer Reviews | 4.6 4.6 out of 5 stars (111) |
| Date First Available | 4 July 2021 |
| Item Weight | 32 g |
| Material Composition | Metal & PC |
| Package Dimensions | 8.51 x 2.9 x 2.69 cm; 32 g |
| Quantity | 1 |
| Special Features | Durable, Easy to Use |
| batteries required | No |

## Images

![Aquarium CO2 Bubble Counter with Built-in Check Valve for CO2 Generator Regulator, Single Head - Image 1](https://m.media-amazon.com/images/I/51C8peKu0-L.jpg)
![Aquarium CO2 Bubble Counter with Built-in Check Valve for CO2 Generator Regulator, Single Head - Image 2](https://m.media-amazon.com/images/I/61TL4gEEFnL.jpg)
![Aquarium CO2 Bubble Counter with Built-in Check Valve for CO2 Generator Regulator, Single Head - Image 3](https://m.media-amazon.com/images/I/61dYkpdfwlL.jpg)
![Aquarium CO2 Bubble Counter with Built-in Check Valve for CO2 Generator Regulator, Single Head - Image 4](https://m.media-amazon.com/images/I/61r9EyvoGyL.jpg)
![Aquarium CO2 Bubble Counter with Built-in Check Valve for CO2 Generator Regulator, Single Head - Image 5](https://m.media-amazon.com/images/I/61vhuS5DmvL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by C***R on 1 January 2026*

Work great good quality affordable I have 2 no leaks just a product overall

### ⭐⭐⭐⭐⭐ Review
*by T***W on 3 January 2025*

Not too expensive. Has a small o-ring inside it--have no idea how to use it. Anyways, installed it and there are no leaks. I would NOT recommend you unscrew the bottom. THe check valve parts will fall out and can be lost easily. Don't do it!!!

### ⭐⭐⭐⭐ Review
*by A***A on 28 December 2025*

I used the dual needle valve splitter from this brand to add an output to my UNS regulator. I went with this bubble counter to save a couple bucks and I wish I had gone with the UNS one for the matching look. The first day this was set up I had a lot of water back up through my clear tubing and I assumed the check valve was cheap and faulty. I went through and tightened everything more than what I would call finger tight, and now it works as well as the UNS bubble counter. Overall it works as expected but it shows that it’s not as nice as the UNS one which is a masterpiece in form and function comparatively.

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-22*