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FZONE

FZONE Pro Series Aquarium Dual Stage CO2 Regulator Adjustable Output Pressure with DC Solenoid and Integrated High Precision Needle Valve and Bubble Counter

    • Based on 442 reviews
Condition: New
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Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon
Arrives Tuesday, May 21
Order within 14 hours and 26 minutes
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Features

  • Dual stage construction & adjustable output pressure. Dual stage construction provides stable output pressure regardless of how much CO2 gas remains inside the CO2 cylinder, eliminating unpredictable catastrophes such as an end-of-tank-dump (EoTD). The output pressure is adjustable from 0-65 PSI based on customers different needs.
  • Modular manifold block design. Two manifold blocks are included. Each block comes with its own high-precision needle valve and can be operated independently. You may use one block for one aquarium or use both for two aquariums.
  • Safety and precision in mind. Our regulator has a built-in safety valve. It will open automatically to release the pressure when it exceeds 100 PSI. The integrated needle valve is precise. The CO2 output can be adjusted to as low as 1 bubble every 3 seconds.
  • Solenoid runs on 12V DC instead of conventional 120V AC. This regulator adapts to 12V DC, which is more stable and consumes less power. The solenoid is safe to touch and is very quiet. This solenoid is designed to work with an automatic timer.
  • Attention. Suitable for North American CO2 cylinder with CGA320 adapter! Installation tools are included.

Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 7.56 x 2.56 x 6.69 inches; 2.43 Pounds


Date First Available ‏ : ‎ May 22, 2020


Manufacturer ‏ : ‎ FZONE


Best Sellers Rank: #49,313 in Pet Supplies (See Top 100 in Pet Supplies) #200 in Aquarium Air Pump Accessories


#200 in Aquarium Air Pump Accessories:


Customer Reviews: 4.4 4.4 out of 5 stars 442 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, May 21

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

🚀 Abunda's Overview

This is our summary and key points to consider based on customer reviews.

The FZONE Pro Dual-stage regulator comes highly recommended by many users for its cost-effectiveness, reliability, precise control over CO2 flow, and overall quality. Users appreciate that it can be used with smaller tanks such as paintball tanks as well as larger ones. Some have reported difficulty in adjusting the CO2 rate due to the sensitivity of the needle valves, but the majority seem to find the system works well and facilitates improved plant growth in their aquariums.

Pros

  • 👍 Fits both smaller and larger standard CO2 tanks
  • 👍 Provides precise control over the CO2 flow
  • 👍 Adequate safety measures in design
  • 👍 Affordably priced for its functionality
  • 👍 Reliable and consistent in CO2 delivery

Cons

  • 👎 Needle valves can be difficult to adjust
  • 👎 Gauges are not accurately calibrated for aquarium-specific pressures
  • 👎 Furthermore, the solenoid lacks a light indicator to easily check if it’s on or off

Should I Buy It?

If you have a moderate to larger size aquarium and are looking to try CO2 injection for improved plant growth, the FZONE Pro Dual-stage regulator is a strong option to consider. Despite some minor drawbacks, its cost-effectiveness and quality performance make it a device that's likely to provide you with good value for your money.

    • Excellent option for CO2 injection for a larger tank.
I have been involved in the aquarium hobby for several decades, but this is the first time I have ventured into the use of CO2 injection for a planted aquarium. I have a 55 gallon freshwater tank that is heavily planted and moderately stocked with fish. I have adequate lighting and add fertilizers to the tank, but needed a source of carbon to facilitate plant growth. After extensive research into various options, I decided to use CO2 injection from a standard 5# CO2 tank, FZONE regulator and a ceramic diffuser. I chose the FZONE Pro Dual-stage regulator for a number of specific reasons. 1. This regulator comes with a standard CGA320 connector that screws onto standard CO2 tanks like the 5# tank I chose. Should you wish to use this regulator with smaller tanks such as paintball tanks, Soda Stream tanks, or even disposable tanks, adapters are available to do so. However, for a 55 gallon tank and larger, standard CO2 tanks are more cost effective. 2. The regulator comes with two stages of regulation and two gauges to monitor tank pressure and delivery pressure. Furthermore, the delivery pressure is adjustable. The dual stage regulator keeps the delivery pressure constant and avoids the possibility of a end of tank surge of CO2 which can harm livestock in the tank. Thus, I do not have to monitor tank pressure on a daily basis. Many regulators come with two gauges but are only a single stage of regulation. Some mini regulators come with only one gauge. Some regulators come with a non-adjustable delivery pressure. 3. The regulator comes with a solenoid that operates on a 12v DC power supply. That is safer than a 120V solenoid when you are working near water. If the power supply does fail, it is easily replaced as 12 VDC power supplies are commonly used for a variety of applications. I have the power supply plugged into a timer such that the CO2 comes on 2 hours before my lighting in the morning and turns off 1 hour before the lights turn off. That insures the plants have an adequate supply of CO2 during the high-growth period, but CO2 does not build up to excessive levels at night when plants cannot consume it. The solenoid does cut off the CO2 flow completely when the power is off. 4. The regulator comes with not just one, but two needle valves and accompanying bubble counters with check valves built in. These appear to be precision machined valves that provide precise control over the CO2 flow. They seem to be quite stable in that when the CO2 comes on in the morning, the flow rate is the same as it was the previous day. I have mine set for about 90 bubbles per minute, but you might need more or less depending upon your tank size, water chemistry and plant requirements. I am only using one of the needle valves, but you can connect a second tank, or reserve it as a spare in case the first one fails. The check valve insures that tank water does not back up into the needle valve and regulator when the CO2 flow is stopped at night. This avoids one potential maintenance issue. 5. When I had my CO2 tank filled, the supplier provided a couple of nylon washer. However, I found that these washer were not thick enough to provide a good seal between the tank and the regulator. The thicker washer provided with the regulator worked perfectly. 6. I have not had the unit long enough to verify its long term durability, but considering I should only have to refill the CO2 tank every 4-6 months and I do not have to make routine adjustments to the needle valve, I predict that the system will last a long time. The most likely maintenance issues may be the solenoid and power supply; both of these are easily replaceable should the need arise. 7. Lastly, the system seems to be fairly priced. Most dual-stage regulators are significantly more expensive than the FZONE. Since I have not used CO2 injection previously, I did not want to spend $200-300 for a regulator alone. I do recommend this unit to anyone with a 40 gallon and larger tank who wants to begin using CO2 injection. For tanks smaller than 40 gallons, this is probably more system than is required, but it suits my 55 gallon setup quite well. ... show more
Reviewed in the United States on September 26, 2020 by RayClem
    • What a great regulator!
Review Image by Hannah J. Hannah J.
This regulator has been great! No drift in the needle value, love that I can add more manifolds to run more tanks off of it. Just an overall well build regulator. Would highly recommend to others!
Reviewed in the United States on October 5, 2023 by Hannah J. Hannah J.
    • Great customer service
I waited for 3 years before trying to use my new co2 regulator and it didn’t work after installing. I knew from videos that it should click when I plugged it in but it didn’t so I was pretty sure it was the solenoid. I emailed FZone and within a day they sent details how to check if the solenoid wire connections. I checked and sure enough the red wire was disconnected so I connected it and it works perfect now. ... show more
Reviewed in the United States on August 24, 2023 by Sam
    • Good value and holds its own against more expensive options
There are a number of regulators out there for the aquarium use and they tend to fall into one of two categories: affordable and very expensive. The expensive ones ($400+) are usually the ones made by hobbyists who really know what they are doing. They use top of the line regulators and needle valves. The needle valves alone on those can cost more than this entire system. Those are hands down the best...but at the end of the day do they perform better? Not necessarily. This model from FZone gets the job done effectively. It delivers the CO2 your tank needs and offers the protection and convenience the more expensive ones provide. I would recommend this one to all but the most picky and discerning. What do I like about this one? -the manifold design is great for adding multiple aquariums and using one CO2 tank and regulator. This design makes it much easier than using splitters on other regulators. -It looks nice and is good quality. More on that later. -it is fairly reliable. The bubble rate and CO2 levels are consistent even after cycling on/off -The price is right! It is nearly identical to others out there. Many of the components are likely from the same factory. What is bad about it? -needle valves are terrible. Very hard to adjust CO2 rate. It works, but is hard to dial in. It need to barely apply pressure and I don't even detect it turning to fine tune it. Its probably a 1/100th of a turn or less to go from 30bpm to 60bpm. I am using it on a 5 gallon tank that needs 35-40 bubbles per minute (bpm). I did get it dialed in, but the needle on this has a high Cv factor. The Cv factor determines the flow rate. On the $100 needle/meter valves you can turn the dial a complete turn and go from 10bpm to 60bpm, maybe even less. Some of them top out around 120 or 180 bpm (2-3bps). A quality meter/needle valve with markings would be AMAZING and the single best upgrade. I may just do this on mine, its worth it. -the gauges are not the right range. The tanks we use are around 850PSI when full. We run 20-30PSI working pressure. The gauges should be 0-2000 for the tank and 0-100 (or less) on the working side. Gauges are most accurate around the 50% range. Both ends of the range are not accurate. With the pressures we use, these gauges are working in the less accurate range. So 25PSI today may not be 25PSI next time you have to adjust it. -The solenoid could use less power. It runs at 4.3 watts. My FZone mini runs at 1.3Watts. -The solenoid needs a light to indicate it is on (open). This was great on my my mini. I could easily see if it was open or closed. So thats it. Its a very good value and gets the job done. I would definitely pay more if they had a new version with good meter/needle valves with low Cv and gauges that are designed for the pressures used in aquarium CO2. However, at the end of the day I can get it dialed in and have it working for weeks/months and my plants and livestock won't care. ... show more
Reviewed in the United States on September 29, 2021 by RyanD
    • Very convenient when running a couple tanks
I bought this as I was running two tanks side by side and wanted co2 for both instead of doing two separate cylinders. I enjoyed this as it was much more simple to use and saved me a lot of space.
Reviewed in the United States on August 10, 2023 by Joey
    • Durability
This is a great product, I own 2. Very easy to setup and use. Clear instructions. Customer service is also very helpful and always answer questions in pront time. If anyone is looking for co2 regulator this is the product for you.
Reviewed in the United States on August 2, 2023 by joseph a. lourenco

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