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8 Best Hydroponic Co2 Regulators For a Perfect Grow Room

Growing plants in a grow room, grow tent, or greenhouse is not easy as you need to provide them with the ideal conditions for them to grow steadily and produce higher yields.

And one of the things that you have to constantly supply your grow area with is Co2.

Carbon dioxide occurs naturally in the air at a level of around 350 to 400 parts per million (PPM). However, plants can use up to 1500 PPM.

This means that plants need more Co2 than what is available in the air. Since the grow room is a controlled area, you’ve to consistently supply it with the right amounts of Co2, so that your plants can grow faster, stronger, and produce higher yields.

With so many hydroponics Co2 regulators on the market, we decided to sample for you the best regulators from the rest.

If you want to effectively release carbon dioxide into your grow area, then you will need a Co2 regulator, timer, and flow meter.

Below are the best Co2 regulators on the market:

Product Material Flow Rate Power Outlet
Manatee Co2 Regulator Hydroponics Emitter Brass construction0 to 15 SCFH110VCheck Price
Grow1 Co2 Grow Room Regulator Brass construction0 to 15 SCFH120VCheck Price
Titan Controls Co2 Regulator Brass construction0 to 15 SCFH120VCheck Price
ProLabs Co2 Regulator Brass construction0 to 15 SCFH120VCheck Price
SPL Co2 Regulator Emitter System Brass construction0 to 15 SCFH110V ACCheck Price
Vivosun Hydroponics Co2 Regulator Emitter System Brass construction0 to 15 SCFH110VCheck Price
Day and Night Co2 Monitor and Controller for Greenhouses N/AN/A110 to 240 VACCheck Price
Titan Controls Preset Carbon Dioxide (Co2) Monitor & ControllerRobust Powder-coated Steel constructionN/A120Check Price

Manatee Co2 Regulator Hydroponics Emitter System

Co2 Regulator Hydroponics Emitter System with Solenoid Valve by Manatee

What We Liked Most About This Product

Manatee Co2 regulator hydroponics emitter system is a complete kit as it features all the things that you need such as the Co2 regulator, flow gauge, solenoid valve, and plastic tubing.

However, the most exceptional feature of this hydroponics regulator is the sturdy brass construction. Brass material is durable and ensures that you utilize the unit for several years to come.

Product Review

Apart from durability, the Manatee Co2 regulator promotes the growth of your plants by speeding up the metabolic rate. As a result, you will have increased yields and your plants will grow healthily.

It doesn’t matter if you use it for your grow room, grow tent or greenhouse, it is designed for such places. Nevertheless, you should not use this particular regulator for the aquarium as there are specific regulators for that.

The Manatee carbon dioxide regulator can increase the growth rate and yields by around 40%. The best part is that it is simple to use by simply changing the sturdy flow meter.

After that, you will get constant and reliable pressure. On top of that, the unit releases around 0.5 to 15 SCFH of Co2 to maintain suitable carbon dioxide levels in the room for optimal growth.

Additionally, the device features a solenoid valve that supplies carbon dioxide during light hours and switches off during dark hours.

You can use this device with 110V outlets and it has a 10 feet hose for attaching to your Co2 tank. What’s more, it can withstand a pressure of up to 4000 PSI. This means that it is very stable. Use this Co2 regulator in grow rooms with 32 to 120 degrees for outstanding results.

The Manatee C02 Regulator is a sturdy and reliable device for growers who want to shorten their growing time and receive higher yields. It is simple to use and will also help you get rid of pests like spider mites and whiteflies.

Pros:

  • Ideal for grow rooms, indoor gardens, and greenhouses
  • Made of a durable, brass material for longevity
  • Helps to eliminate pests and promote faster growth
  • It delivers 5 times more Co2 than what is naturally present in the air
  • The unit supports the rate of plant growth and increase yields
  • It delivers steady carbon dioxide output for optimal growth
  • Excellent flow gauge with a dependable flow rate of between 0.5 and 15 SCFH

Cons:

  • The regulator doesn’t distribute the Co2 around, so, it is the work of the grower to move the device for even supply of carbon dioxide in the growing area.
  • Some users have complained that they got a spoilt flow gauge

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Grow1 Co2 Grow Room environment Regulator

GROW1 CO2 Grow Room Environment Regulator Flow Meter Solenoid

What We Liked Most About This Product

The second hydroponics Co2 regulator on our list is the Grow1 Co2 grow room regulator. This is a perfect carbon dioxide regulator for individuals who want to maintain healthy plants and increase their yields.

The regulator is straightforward to use and delivers even distribution of Co2 in your grow tent.

Product Review

It is made up of a robust brass body, which will put up with tough surroundings. Besides, it also features a durable flow meter and solenoid valve. Together, they make sure that your grow room receives the right Co2 for proper plant growth.

Using this Co2 regulator is fun as it is not complicated at all. The flow meter can be adjusted with a lot of ease, and it has a range of between 0 and 15 SCFH.

Aside from that, the regulator is pre-set at 80 PSI. Therefore, you will receive constant pressure with small changes.

To get started, simply attach the 5 meters long black ¼-inch tubing to a fan for equal distribution of the carbon dioxide in your grow room.

What’s more, the Grow1 Co2 regulator works with all 120V devices, making it extremely versatile.

Overall, it is a simple and sturdy Co2 regulator that will help you to maintain and control your Co2 levels for healthy plant growth. The device is easy to use and more suited for small to medium-sized grow rooms or grow tents.

Pros:

  • Sturdy body for durability
  • It works with any 120V unit
  • Straightforward to read and adjust
  • Well-built to withstand daily wear and tear
  • It has a tubing fan for even distribution of Co2
  • The pre-set regulator doesn’t require adjustment

Cons:

  • This device is not suitable for a larger grow room or greenhouse
  • For those without a digital controller, a timer may be required

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Titan Controls Carbon Dioxide (C02) Regulator

Titan Controls Carbon Dioxide (CO2) Regulator for 120V Controllers & Timers

What We Liked Most About This Product

If you’re on a tight budget but still want a quality hydroponics Co2 regulator for your indoor garden, then you will like the Titan Controls Co2 regulator.

This is a quality regulator but with cheaper parts. It won’t cost you much but still deliver the results that you desire for your grow room.

What we liked most about the Titan Controls regulator is the robust solenoid valve. The Solenoid valve has an excellent response time and consumes low power. As a result, you will reduce your power bill but supply your grow room with the right level of carbon dioxide.

Product Review

This is a robust unit as it features brass construction. It also has two washers. Besides, it has a 12-foot of Co2 dispensing line, which covers a larger area.

The manufacturer included instructions for flow meter settings and a timing chart. Therefore, new growers shouldn’t have difficulty installing or using the device.

Similar to the previous regulator, controlling this device is straightforward with the precision pinwheel knob. The knob allows you to easily control the movement of Co2 from the tank to your grow room.

With the right levels of carbon dioxide in your grow tent, your plants will grow steadily and produce higher yields.

Another great aspect of this hydroponic carbon dioxide regulator is its compatibility with most 120V Co2 controllers and timers.

This includes Titan controllers and other 120V controllers. Moreover, the flow meter is fantastic as it delivers precision accuracy within a range of 0.5 to 15 SCFH.

Unlike some regulators on the market, maintaining this device is simple as it has a high-quality oil-less pressure gauge.

The Titan Controls Carbon dioxide regulator is an affordable and reliable regulator that you can utilize to add Co2 in your grow room for steady growth of your plants and high production.

However, you should be aware of the cheap parts. All-in-all, the regulator does what it says it does and that’s why it is a good bargain.

Pros:

  • Durable solenoid valve
  • Compatible with all 120V controllers and timers
  • Super accurate flow meter with 0.5 to 15 SCFH
  • The solenoid valve has an excellent response time
  • Easy to adjust the flow rate
  • Covers a larger room with the 12-foot dispensing line

Cons:

  • Several users have complained about the gauge not being reliable
  • Cheap plastic flow meter

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ProLabs Co2 Regulator with Solenoid Valve

ProLabs CO2 Regulator w Solenoid Valve. 4000 PSI Gauge, 0.5-15 SCFH.

What We Liked Most About This Product

The ProLabs carbon dioxide regulator is a perfect regulator for growers looking for a versatile and reliable Co2 regulator for their grow room, greenhouse, gardening, hydroponics, home brewing, and even aquariums.

But the most exceptional feature of this tool is the 4-year warranty that the manufacturer offers to buyers. As a result, buyers have full confidence in the unit knowing that they are covered for 4-years.

Product Review

First and foremost, the ProLabs Co2 regulator is made of forged brass construction. This ensures that you’re able to use the device for many years to come. Furthermore, it has a heavy-duty solenoid valve with a 6-ft cord.

Utilizing the regulator is easy and straightforward as it is a plug-and-play device. Simply tighten the nylon washer in position then set up the device. And to be certain that there are no leaks, spray soapy water on all connecting parts.

Despite being affordable, the ProLabs Co2 regulator comes with all the basic features that you can desire in a quality hydroponics Co2 regulator.

For instance, it has an easy to read tank pressure gauge that is rated at 4000 PSI. On top of that, the regulator can work on most 120V controllers and monitors on the market.

Similar to the other units that we’ve looked at, this Co2 regulator also comes with a flow meter range of between 0.5 and 15 SCFH.

The only thing that is lacking is the tubing that you will have to buy separately. Apart from that, the ProLabs Co2 regulator with solenoid valve is a reliable tool that you can use to supply your plants with carbon dioxide for proper growth.

This is a versatile and sturdy regulator that can be applied for a wider range of purposes. You can use it in the grow room, hydroponics, grow tent, greenhouse, aquarium, or even in home brewing.

Pros:

  • Versatile use
  • Sturdy construction for longevity
  • Functions with a broad range of 120V controller and monitors
  • Easy to read tank pressure gauge
  • 4 years manufacturer’s warranty

Cons:

  • The device lacks a distribution tubing, thus you will have to purchase a new one separately.
  • Some users have complained that it is not very accurate

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SPL Co2 Regulator Emitter System

SPL Co2 Regulator Emitter System with Solenoid Valve Accurate and Easy to Adjust Flow Meter

What We Liked Most About This Product

The SPL Co2 regulator emitter system is affordable and versatile. The best part is that it comes with a full package, which includes a Co2 regulator, flow gauge, power cable, solenoid valve, and an air inline.

With all the much-needed parts, you will get started right away. The device is designed for grow rooms, greenhouses, and grow tents.

Product Review

The SPL Co2 regulator is a convenient device that you can utilize to regulate the amount of Co2 that enters your grow room. The device provides accurate readings that will allow you to supply the right levels of Co2 in the grow tents.

Additionally, it is sturdily made to put up with the daily wear and tear and you will use it for many years to come. Thanks to the brass construction and industrial-grade solenoid valve.

Using this hydroponics carbon dioxide regulator is easy and straight. All you have to do is adjust the pressure to meet the required Co2 of your grow room.

A unique feature of the SPL Co2 regulator is the industrial solenoid valve. The valve has a tight sealing, quick response time, and high flow. With the high-quality solenoid, you can set the Co2 to flow steadily when there is light and shut it off in the dark.

Furthermore, the SPL Co2 regulator features a precision flow-gauge with a range of between 0.5 and 15 SCFH. You can connect it to a wider range of Co2 tanks and it comes with 10 feet of the ¼-inch airline.

Note that the unit is compatible with 110V controllers and it can resist a pressure of up to 4000 PSI.

With such outstanding features and a long airline and power cord, this is a fantastic unit for releasing Co2 into a small, medium, or large grow room.

Pros:

  • A fantastic flow rate of 0 to 15 SCFH
  • Robust solenoid valve provides quick response time and high flow
  • Easy to use by simply adjusting the flow meter
  • It improves the plant’s metabolic rates and speeds up growth rates
  • Increases yields by up to 40%

Cons:

  • Many users have complained that it starts to leak after some time
  • You will have to purchase a timer or any other 120V environmental control devices

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Vivosun Hydroponics Co2 Regulator Emitter System

VIVOSUN Hydroponics CO2 Regulator Emitter System with Solenoid Valve Flowmeter for Grow Room

What We Liked Most About This Product

Another top hydroponics Co2 regulator is the Vivosun Hydroponics carbon dioxide emitter system. Vivosun is a top producer of quality hydroponics equipment and services. The brand is committed to producing high-quality and reliable hydroponics tools that simplify the work of users.

The Vivosun hydroponics Co2 regulator emitter system is one of the most effective and reliable hydroponics regulators on our list. It can be utilized in grow rooms, greenhouses, aquariums, grow tents and many other areas. But what I like most about this unit is the durable brass construction.

Product Review

Since it is made of brass parts, expect the Vivosun hydroponics carbon dioxide regulator to last long. It won’t rust easily and will defy the grow room hardships.

Apart from being a quality regulator, the device also features an industrial solenoid valve and flow gauge. These are vital parts as they ensure that only a certain level of carbon dioxide goes into your grow tent.

However, it’s recommended that you don’t exceed 2500 parts per million, as doing so may end up destroying your plants in the grow room.

Equipped with the industrial solenoid valve, you can easily attach it to the hose and slowly release carbon dioxide into your grow room or grow tent.

What’s more, it comes with a large pressure gauge that is extremely easy to read. On top of that, it comes with a plastic washer that is connected to your Co2 tank.

The Vivosun hydroponics Co2 regulator is a versatile device that allows you to use it in different places. If you want to attain optimal control of the unit, then you may have to buy a Co2 monitor unit, a digital wall timer, or repeat cycle timer.

With fantastic features, the Vivosun hydroponics Co2 regulator is one of the must-have devices for your grow tent. Not only is it from a reliable brand, but it comes with exceptional features. Ensure to seal the device with Teflon tape to prevent leakage.

Pros:

  • Suitable for all types and sizes of grow tents
  • Durable brass parts that are resistant to elements and rust
  • Super accurate flow meter with a flow rate of between 0 to 15 SCFH
  • Industrial grade solenoid valve reduces power consumption and operating costs
  • Easy to monitor with the large pressure gauge
  • Compatible with 110V controllers
  • 4-year warranty

Cons:

  • It is slightly costly when compared to other regulators on our list
  • The device will leak if you don’t seal it with Teflon tape

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Day and Night Co2 Monitor and Controller for Greenhouses

Day and Night CO2 Monitor and Controller for Greenhouses

What We Liked Most About the Product

The Day and Night Co2 monitor and controller is one of the most preferred carbon dioxide regulators and controllers on the market.

You can easily set up this unit as it doesn’t come with complicated features. However, the most exceptional feature of the controller is that it automatically shuts down the flow of Co2 at night.

Product Overview

The Day and Night Co2 monitor and controller is sturdily built to last long. It has a life expectancy of up to 15 years, which is amazing.

The controller allows you to see low and high target carbon dioxide levels. It is also compatible with 100 to 240 VAC 5A piggyback power cord.

Since the device has a photo sensor, no power will be wasted as it senses when there is darkness and shuts off.

This is a perfect monitor and regulator for a larger grow room or greenhouse as it covers an area of up to 1500 square feet.

Besides, it is also accurate and worth the cost. So, if you’ve been looking for a quality and reliable regulator for your grow room, then this is it.

You will never have to guess the carbon dioxide levels in your grow tent or room. This is because the Co2 level and room temperature are shown on the digital LCD screen. Also, it is simple to install and use that even new growers will have a simple time.

Pros:

  • Well-made for longevity
  • Easy to set up and use
  • It has a photo sensor that shuts off the Co2 when it detects darkness
  • The unit is accurate
  • It covers a larger area
  • It is accurate
  • The regulator has an excellent life expectancy of up to 15 years

Cons:

  • It has a short warranty for only one-year
  • The sensor needs some time to actualize

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Titan Controls Preset Carbon Dioxide (Co2) Monitor & Controller

Titan Controls Preset Carbon Dioxide (CO2) Monitor & Controller, 120V - Atlas 2

What We Liked Most About the Product

If you want a controller and regulator that will last for several years to come, then you will be glad to have the Titan Controls Preset Carbon Dioxide (Co2) Monitor and Controller.

The regulator is made of a robust powder-coated steel body that will withstand anything that you throw at it. But the most outstanding feature of this monitor is the self-calibration feature that will help you to provide a precise reading of the carbon dioxide levels in the room.

Product Overview

The Titan Controls Co2 controller and regulator is straightforward to install and use. With the help of the built-in photocell, the unit can detect light and darkness to help in the supply of Co2 when there is light and shut off in the darkness.

The device works at 15 amps and comes with a carbon dioxide control of 1500 PPM.

Apart from being reliable, the controller is one of the simplest units to use on the market. Note that it is compatible with 120V and not 240V.

With a 3-year warranty from the manufacturer, this is a good investment for individuals with grow rooms, grow tents and even greenhouses.

Get this unit if you want a hydroponics Co2 regulator and controller that will automatically shut off when carbon dioxide is no longer needed in the room. Apart from that, you will not have issues installing or using this monitor as it’s straightforward.

Pros:

  • Durable construction for long-lastingness
  • Simple to use
  • Utilizes 50% less Co2
  • Warns the user when it detects high Co2 levels in the grow room
  • Features a built-in self-calibration function
  • 3-year warranty

Cons:

  • It is quite expensive

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FAQ

What is a Co2 regulator?

This is a device that allows you to control the Co2 gas flowing from the cylinder into your grow room. It usually features a pressure gauge, flow meter, and a valve.

How do I tell that my grow room requires more Co2?

Several signs can indicate that your grow room requires more Co2. Some of the things to look out for include plants dying easily, plants not growing steadily, plants take longer to reach the flowering stage and lower yields than what you anticipate.

What should I consider when picking a hydroponic Co2 regulator?

If you want to pick the most ideal Co2 regulator for your grow room, then you’ve to consider a few factors.

Some of the vital things to look at are your grow room size, type of material that makes up the regulator, sensor, ease of use, display, and warranty.

Should I select a motorized or solenoid valve for my Co2 regulator?

Although there are two types of valves on the market, the Solenoid valve is the one recommended for Co2 regulators. This is because it is suitable for controlling the volume and directing the flow of carbon dioxide gas in the grow room.

What level of Co2 is right for my grow room?

Different grow room areas will require different levels of Co2. If the Co2 level is below 200 parts per million (PPM), then it may negatively affect your plants.

Alternatively, if the Co2 levels are above 2000 PPM, it will end up killing your plants. So, the ideal Co2 levels for your grow room are between 1, 000 and 1, 500 PPM.

Conclusion

After reading our detailed review and guide, I hope that you’ve found a hydroponics Co2 regulator that meets both your needs and budget.

There are several hydroponics carbon dioxide regulators on the market that make picking the best to be a daunting task. Take your time and select a device that will be perfect for your plants and grow room size.

The right carbon dioxide in your grow area will help your plants to grow steadily, flower quickly, and produce higher yields in the end.