---
product_id: 122374819
title: "FZ-0100"
brand: "fzone"
price: "€ 105.09"
currency: EUR
in_stock: true
reviews_count: 13
category: "Fzone"
url: https://www.desertcart.pt/products/122374819-fz-0100
store_origin: PT
region: Portugal
---

# Precision bubble counter with check valve prevents backflow Durable aluminum alloy body with fine-tuning knobs 12V DC split-type solenoid for safer, stable CO2 control FZ-0100

**Brand:** fzone
**Price:** € 105.09
**Availability:** ✅ In Stock

## Summary

> 🌿 Elevate your planted tank game with precision CO2 control that’s built to last!

## Quick Answers

- **What is this?** FZ-0100 by fzone
- **How much does it cost?** € 105.09 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/122374819-fz-0100)

## 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

- • **Complete DIY Kit:** Includes bubble counter, check valve, and all necessary tools for effortless installation and maintenance.
- • **Leak-Proof Design:** Upgraded sealing materials and check valve technology prevent leaks and water backflow, protecting your investment.
- • **Precision CO2 Flow Control:** Fine-tune your aquarium’s CO2 release to a perfect 1 bubble every 3 seconds for optimal plant growth.
- • **Advanced Safety & Stability:** Newest 12V DC split-type solenoid ensures safer, more reliable operation than traditional AC models.
- • **Built to Last with Warranty:** Crafted from hard aluminum alloy with a 1-year warranty and responsive customer support for peace of mind.

## Overview

The FZONE Aquarium CO2 Regulator features a cutting-edge 12V DC split-type solenoid for safer and more stable CO2 delivery, paired with a high-precision bubble counter and check valve to prevent backflow. Constructed from durable aluminum alloy with upgraded sealing materials, it offers fine-tuned control of CO2 flow at one bubble every three seconds. This all-in-one DIY system includes essential installation tools and is backed by a one-year warranty, making it a reliable choice for serious aquatic plant enthusiasts.

## Description

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

Review: Buyer be aware******Update******* - 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.
Review: Well built regulator for a larger tank and great customer support!! - I've been doing high-tech planted tanks for nearly a decade years now. When I bought this unit, I did a lot of research to find the best balance of price, quality, and size. Now that I have the FZone, I couldn't be happier, it is exactly what I was hoping for. Overall satisfaction with product: High Impression of build quality: High Product feels very solid. There is no plastic on it. I expect it will last for years to come. Impression of Needle Valve: High I’ve used a lot of needle valves over the years, and this one is the best I’ve used. It has fine grain control over the bubble count; and once set it does not seem to drift. I appreciated the inscription showing which direction to turn; as this is a frustrating guessing game on other regulators. Impression of Regulator: High Adjustment of the regulator is straightforward. Once set; it does not seem to gain or lose output pressure. Impression of Bubble Counter: High It looks clean, professional, and exactly like what you want on your showcase tank. Reading the bubbles is straightforward and consistent. Impression of Pressure Gauge: High The gauges are large, written in psi and kg/cm2, and easy to read. Having the second 'tank' pressure gauge helps identify when the tank is getting low, that way I have the chance to refill it before it runs out. Impression of Relay: High I appreciated the quick-disconnect near the relay; as my electrical strip/outlet is not easy to access. Impression of unboxing/accessories: High The packaging is what I would expect from a high-quality product. It includes a bottle wrench; which I was happy to have when I needed it. I was also pleased to see an extra set of o-rings was included; no manufacturer thinks to do this anymore. Impression of Customer Support : Very High I have reached out to Fzone with minor issues in the past. They responded very quickly and were very personable and helped me with my issue. I was very impressed. Just try to get that kind of customer service or product quality commitment from the big guys! Overall, it’s hard to not see that FZone wants to be the best in the industry. If they continue producing products like this and supporting their customers like they did for me in the past; I believe they will achieve it quickly.

## 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 | #45,663 in Pet Supplies ( See Top 100 in Pet Supplies ) #142 in Aquarium Air Pump Accessories |
| Brand | FZONE |
| Brand Name | FZONE |
| Customer Reviews | 4.2 out of 5 stars 1,327 Reviews |
| Item Weight | 0.9 g |
| 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 Count |
| Warranty Description | 1 year manufacturer |

## Product Details

- **Brand:** FZONE
- **Item Weight:** 0.9 g
- **Manufacturer:** FZONE
- **Number of Packs:** 1
- **Unit Count:** 1 Count

## Images

![FZ-0100 - Image 1](https://m.media-amazon.com/images/I/61cgmb2Lt6L.jpg)
![FZ-0100 - Image 2](https://m.media-amazon.com/images/I/61QA7f7waPL.jpg)
![FZ-0100 - Image 3](https://m.media-amazon.com/images/I/61HIMV-6FWL.jpg)
![FZ-0100 - Image 4](https://m.media-amazon.com/images/I/61aDcvYn8YL.jpg)
![FZ-0100 - Image 5](https://m.media-amazon.com/images/I/71Tiuyp+YTL.jpg)

## Available Options

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

## 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

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

### ⭐⭐⭐⭐⭐ Well built regulator for a larger tank and great customer support!!
*by J***. on January 11, 2020*

I've been doing high-tech planted tanks for nearly a decade years now. When I bought this unit, I did a lot of research to find the best balance of price, quality, and size. Now that I have the FZone, I couldn't be happier, it is exactly what I was hoping for. Overall satisfaction with product: High Impression of build quality: High Product feels very solid. There is no plastic on it. I expect it will last for years to come. Impression of Needle Valve: High I’ve used a lot of needle valves over the years, and this one is the best I’ve used. It has fine grain control over the bubble count; and once set it does not seem to drift. I appreciated the inscription showing which direction to turn; as this is a frustrating guessing game on other regulators. Impression of Regulator: High Adjustment of the regulator is straightforward. Once set; it does not seem to gain or lose output pressure. Impression of Bubble Counter: High It looks clean, professional, and exactly like what you want on your showcase tank. Reading the bubbles is straightforward and consistent. Impression of Pressure Gauge: High The gauges are large, written in psi and kg/cm2, and easy to read. Having the second 'tank' pressure gauge helps identify when the tank is getting low, that way I have the chance to refill it before it runs out. Impression of Relay: High I appreciated the quick-disconnect near the relay; as my electrical strip/outlet is not easy to access. Impression of unboxing/accessories: High The packaging is what I would expect from a high-quality product. It includes a bottle wrench; which I was happy to have when I needed it. I was also pleased to see an extra set of o-rings was included; no manufacturer thinks to do this anymore. Impression of Customer Support : Very High I have reached out to Fzone with minor issues in the past. They responded very quickly and were very personable and helped me with my issue. I was very impressed. Just try to get that kind of customer service or product quality commitment from the big guys! Overall, it’s hard to not see that FZone wants to be the best in the industry. If they continue producing products like this and supporting their customers like they did for me in the past; I believe they will achieve it quickly.

### ⭐⭐⭐⭐⭐ Fzone company has top notch customer service
*by C***S on April 11, 2026*

So when I first got this regulator it worked really well and I liked it then when I got my co2 tank refilled recently for whatever reason I came home to it not functioning properly and I didn’t realize it till the next day it didn’t shut my co2 off with the timer like it usually would and nuked my entire shrimp colony at first I thought it was the timer so I got a different timer when using a different timer didn’t fix it that’s when I realized the regulator was the problem so I unplugged it from the timer and it didn’t stop bubbling even with no power going to it so I started removing the hose so it can’t inject anything when I wanted it off and reattaching when I wanted it on and thought I found a solution well it stopped coming on entirely as of last week and that’s when I realized it had a 1 yr warranty since it was past the return date for Amazon so I emailed and messaged fzone on messenger to see which would be better to contact them from and they went above and beyond to help me they said they sent a replacement regulator out and even gonna send some free root tabs as a small gift and I really appreciate it I have no complaints with this company

## Frequently Bought Together

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-09-13*