---
product_id: 538511121
title: "FZONE Aquarium Co2 Regulator DC Solenoid with Big Dual Gauge Display and Bubble Counter and Check Valve Plant Grow DIY CO2 System CGA320 Side Open Cylinder"
brand: "fzone"
price: "€ 167.29"
currency: EUR
in_stock: true
reviews_count: 5
category: "Fzone"
url: https://www.desertcart.hr/products/538511121-fzone-aquarium-co2-regulator-dc-solenoid-with-big-dual-gauge
store_origin: HR
region: Croatia
---

# Bubble counter with check valve prevents water backflow Big dual gauge display for precise pressure monitoring 12V DC split-type solenoid for stable, safe operation FZONE Aquarium Co2 Regulator DC Solenoid with Big Dual Gauge Display and Bubble Counter and Check Valve Plant Grow DIY CO2 System CGA320 Side Open Cylinder

**Brand:** fzone
**Price:** € 167.29
**Availability:** ✅ In Stock

## Summary

> 🌿 Elevate your aquarium game with precision CO2 control — because your plants deserve the best!

## Quick Answers

- **What is this?** FZONE Aquarium Co2 Regulator DC Solenoid with Big Dual Gauge Display and Bubble Counter and Check Valve Plant Grow DIY CO2 System CGA320 Side Open Cylinder by fzone
- **How much does it cost?** € 167.29 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/538511121-fzone-aquarium-co2-regulator-dc-solenoid-with-big-dual-gauge)

## Best For

- fzone enthusiasts

## Why This Product

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

## Key Features

- • **Durable Premium Build:** Crafted from hard aluminum alloy with surface spray treatment for long-lasting corrosion resistance.
- • **Precision CO2 Control:** Fine-tune your aquarium CO2 flow to 1 bubble every 3 seconds for optimal plant growth.
- • **Peace of Mind Warranty:** Backed by a 1-year warranty and 24/7 customer support to keep your aquatic ecosystem thriving.
- • **All-in-One Installation Kit:** Includes bubble counter, check valve, and all necessary tools for effortless DIY setup.
- • **Next-Gen Safety & Stability:** Upgraded 12V DC solenoid ensures safer, more reliable performance than traditional AC models.

## Overview

The FZONE Aquarium CO2 Regulator features a cutting-edge 12V DC split-type solenoid for enhanced safety and stability, a large dual gauge display for accurate pressure readings, and a bubble counter with a check valve to prevent water backflow. Designed with high-precision fine-tuning, it delivers CO2 at a consistent rate of one bubble every three seconds, optimizing plant growth. Made from durable aluminum alloy with a premium finish, it includes all installation tools and is backed by a one-year warranty and round-the-clock support.

## Description

FZONE Aquarium Co2 Regulator DC Solenoid with Big Dual Gauge Display and Bubble Counter and Check Valve Plant Grow DIY CO2 System CGA320 Side Open Cylinder : desertcart.ae: Pet Supplies

Review: Bueno calidad precio - Facil y rapido de instalar lo puse junto con un atomozador de chihiros y funciona perfectamente la solenoide corta el paso del gaa en un par de minutos,solo que la presion no es regulable porque es de una etapa y al menos a mi con la botella llena me marca 100psi contacte con fzone y me dijeron que era normal y no era peligroso me contestaron enseguida
Review: Régulateur CO2 - Bel appareil mais dommage que la notice ne soit qu'en anglais.

## Features

- UPDATED SPLIT-TYPE DC SOLENOID! Newest 12 DC split-type solenoid instead AC models, more safe and stable.
- HIGH PRECISION STRUCTURE-This regulator is designed for the aquarium. High precision fine-tuning easy for co2 to be 1 bubble in 3 seconds. Upgraded sealing material avoid any leak.
- BUBBLE COUNTER AND TOOLS INCLUDED! Together with bubble counter, you can read your co2 flow rate. Bubble counter with check valve function, stop water backflow to bottle. All installing tools included, make all goes easy.
- CLASS 1 MANUFACTURING TECHNOLOGY! Made of hard aluminum alloy, surface spraying treated. Pressure knob and fine tuning knob with knurl.
- One-year Warranty：Fzone will offer a one-year warranty, round-the-clock service, and you can reach out to us at any time for any product-related concerns.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07QFT69P8 |
| Best Sellers Rank | #35,051 in Pet Supplies ( See Top 100 in Pet Supplies ) #206 in Aquarium Water Quality Testing & Treatment |
| Brand | FZONE |
| Brand Name | FZONE |
| Customer Reviews | 4.1 out of 5 stars 1,281 Reviews |
| Included Components | 1 x Double mini Display Valve body, 1 x 110v US standard solenoid valve installed on the valve body, 1 x Fine-tuning Valve installed on the valve body, 1 x Bubble counter with check valve function, 1 x installing tools |
| Item Form | Gas |
| Item Weight | 0.9 Grams |
| Item form | Gas |
| Item weight | 0.9 Grams |
| Manufacturer | FZONE |
| Manufacturer Part Number | FZ-0100 |
| Model Number | 748323719468 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Pet Type | Fish |
| Target Species | Fish |
| UPC | 748323719468 |
| Unit Count | 1.0 Count |
| Unit count | 1.0 Count |

## Product Details

- **Brand:** FZONE
- **Item form:** Gas
- **Item weight:** 0.9 Grams
- **Number of Packs:** 1
- **Unit count:** 1.0 Count

## Images

![FZONE Aquarium Co2 Regulator DC Solenoid with Big Dual Gauge Display and Bubble Counter and Check Valve Plant Grow DIY CO2 System CGA320 Side Open Cylinder - Image 1](https://m.media-amazon.com/images/I/61cgmb2Lt6L.jpg)
![FZONE Aquarium Co2 Regulator DC Solenoid with Big Dual Gauge Display and Bubble Counter and Check Valve Plant Grow DIY CO2 System CGA320 Side Open Cylinder - Image 2](https://m.media-amazon.com/images/I/61QA7f7waPL.jpg)
![FZONE Aquarium Co2 Regulator DC Solenoid with Big Dual Gauge Display and Bubble Counter and Check Valve Plant Grow DIY CO2 System CGA320 Side Open Cylinder - Image 3](https://m.media-amazon.com/images/I/61HIMV-6FWL.jpg)
![FZONE Aquarium Co2 Regulator DC Solenoid with Big Dual Gauge Display and Bubble Counter and Check Valve Plant Grow DIY CO2 System CGA320 Side Open Cylinder - Image 4](https://m.media-amazon.com/images/I/61aDcvYn8YL.jpg)
![FZONE Aquarium Co2 Regulator DC Solenoid with Big Dual Gauge Display and Bubble Counter and Check Valve Plant Grow DIY CO2 System CGA320 Side Open Cylinder - Image 5](https://m.media-amazon.com/images/I/71Tiuyp+YTL.jpg)

## Questions & Answers

**Q: Hi, do you sell with 21.8 connector instead of CGA320 ?**
A: Sorry we don't have that.

**Q: Does this regulator fit a standard CO2 tank**
A: Yes it does fit a standard Co2 tank.

**Q: Do i have to buy two if im using a splitter for two tanks or does one control both?**
A: The solenoid with bubble counter only can be used for one tank.

**Q: If the solenoid is not making a clicking sound does that mean it’s not working? C02 will not come through.**
A: Possibly. If you've eliminated the cord and the outlet then it's going to be a problem with the solenoid.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Bueno calidad precio
*by C***A on 1 June 2026*

Facil y rapido de instalar lo puse junto con un atomozador de chihiros y funciona perfectamente la solenoide corta el paso del gaa en un par de minutos,solo que la presion no es regulable porque es de una etapa y al menos a mi con la botella llena me marca 100psi contacte con fzone y me dijeron que era normal y no era peligroso me contestaron enseguida

### ⭐⭐⭐⭐⭐ Régulateur CO2
*by G***. on 8 December 2025*

Bel appareil mais dommage que la notice ne soit qu'en anglais.

### ⭐⭐⭐⭐⭐ Buyer be aware******Update*******
*by J***N on 23 October 2025*

Buyer beware. This regulator solenoid does not shut off CO2. Soon as the product arrived, I read the instructions and installed the regulator on my 5lb CO2 tank. Right out the box, the solenoid was faulty and does not shut off the CO2. I then waited for over 4 hours to see if the bubbles in the bubble counter would stop. It did not. I then tried uninstalling the regulator and double checking my fittings. That did not solve the problem. I have to manually turn off the bubble counter for the bubbles to stop. I did a leak test. There were no leaks. Since my aquarium is still cycling, I have no livestock except for plants. Should I continue to use this regulator, IT WILL KILL MY LIVESTOCK. The instructions are very basic and provide no problem solving. There are some grammatical errors in the instructions and the instructions provide no pictures for reference. There is an Allen Key provided but no instructions on how or where to use this tool. Obviously, the durability of this product is simply not there. The accuracy, it may be accurate but it is very difficult to determine since the solenoid is faulty right out the box. The fit is perfect. Sadly, there are videos and reviews from others that have the same issue. Since some have this problem while others do not, you purchase this product on a gamble that perhaps yours may work. *****Update******* Change 1 star to 5 star. I was able to find a YouTube video by FZone Studios that shows how to take apart the solenoid to adjust the spring. Once I followed what the video instructed, the solenoid now works perfectly. What the video recommends is to take apart the solenoid, check for dirt/dust, unscrew the 2 screws to release the plate, then check the spring and stretch the spring a little bit. Reinstall the plate and solenoid and test to see if the solenoid shuts off the CO2. Once I did this, the CO2 shuts off within 5-10 minutes as the seller stated. The product works perfectly now.

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-09-13*