Description
GLA PRO-DS Dual Stage CO2 System (Modular)
The GLA PRO-DS Dual Stage CO2 System combines our full-size dual-stage regulator platform, modular CO2 distribution, a refillable aluminum CO2 cylinder, and CO2-resistant tubing in one configurable planted aquarium CO2 package.
Designed for aquarists seeking premium pressure regulation, expanded working-pressure capability, dual-gauge monitoring, and long-term system flexibility, the PRO-DS can be configured with one to six independently controlled CO2 outputs. Select the manifold configuration and cylinder package that best fits your current aquarium system while retaining the flexibility to expand later.
Each PRO-DS regulator is individually inspected, pressure tested, and leak checked in the USA prior to shipment.
At a Glance
- Pressure Regulation: Dual-stage
- Cylinder Connection: CGA-320 standard USA CO2 cylinders
- Included Cylinder: 5 lb aluminum CO2 cylinder; one- or two-cylinder package selectable at purchase
- Pressure Monitoring: Dual gauges for cylinder pressure and working pressure
- Output Pressure Range: 0–140 PSI
- CO2 Distribution: Selectable 1–6 aquarium modular configuration
- Independent Control: Precision needle valve and bubble counter for each manifold output
- Automation: Integrated electric solenoid
- Tubing: 10 feet of CO2-resistant aquarium tubing
- Warranty: GLA Limited Lifetime Warranty on the regulator
Best For
- Aquarists seeking GLA’s full-size dual-stage CO2 platform
- Single planted aquariums with future expansion in mind
- Multi-aquarium CO2 installations
- High-tech planted aquarium systems
- Applications requiring expanded working-pressure capability
- Hobbyists who want separate cylinder-pressure and working-pressure gauges
- Beginner and experienced aquarists seeking a scalable long-term CO2 system
The PRO-DS is not limited to a particular aquarium size or experience level. Appropriate CO2 delivery depends on plant demand, lighting, circulation, diffusion method, surface agitation, and overall system configuration.
Why Choose the GLA PRO-DS CO2 System?
The PRO-DS CO2 System combines GLA’s flagship dual-stage regulator architecture with modular CO2 distribution and the core components needed to establish a refillable pressurized CO2 installation.
- Full-Size Dual-Stage Architecture: Designed for refined working-pressure control and long-term stability
- Configurable Modular Manifold: Select from one to six independently controlled aquarium outputs
- Expanded Pressure Range: Adjustable output from 0–140 PSI provides additional flexibility for higher-pressure applications
- Dual-Gauge Monitoring: Separate gauges provide visual reference for cylinder pressure and regulator working pressure
- Precision CO2 Adjustment: Each manifold output includes its own precision needle valve
- Integrated Flow Monitoring: Each manifold output includes a bubble counter for convenient visual CO2 monitoring
- Automatic Operation: Integrated solenoid allows CO2 injection to be controlled using a timer or compatible controller
- System Protection: Integrated pressure relief valve provides an additional level of protection
- Refillable Cylinder: Includes one or two 5 lb aluminum CGA-320 CO2 cylinders depending on the selected package
Dual-Stage Pressure Regulation
Dual-stage regulators reduce cylinder pressure through two separate pressure-reduction stages. This architecture is designed to provide increased working-pressure stability as cylinder pressure changes over time and to reduce the likelihood of pressure increases as the CO2 cylinder approaches depletion.
The PRO-DS combines this dual-stage architecture with an expanded 0–140 PSI working-pressure range for aquarists who want maximum configuration flexibility from a single regulator platform.
- Two-stage pressure reduction
- Stable and controllable working pressure
- Reduced likelihood of end-of-tank pressure spikes
- Expanded 0–140 PSI output capability
Precision Control & Automation
Each PRO-DS manifold output includes an independently adjustable precision needle valve and integrated bubble counter, allowing CO2 flow to be tuned separately for each connected aquarium.
The integrated electric solenoid allows CO2 injection to be automatically coordinated with the aquarium photoperiod using a standard timer or compatible controller.
Dual gauges provide separate visual references for cylinder pressure and regulator working pressure. The working-pressure gauge is used when setting regulator output pressure, while the cylinder-pressure gauge provides information about pressure within the connected CO2 cylinder.
Bubble rate should be treated as an aquarium-specific reference rather than a universal measurement of dissolved CO2. Actual CO2 requirements vary with aquarium volume, plant mass, lighting, circulation, diffusion efficiency, and surface agitation.
Modular Manifold System
The PRO-DS CO2 System can be configured with one to six manifold blocks, allowing you to build the system around the number of aquariums you currently operate.
- PRO-DS-1: 1 independently controlled aquarium
- PRO-DS-2: 2 independently controlled aquariums
- PRO-DS-3: 3 independently controlled aquariums
- PRO-DS-4: 4 independently controlled aquariums
- PRO-DS-5: 5 independently controlled aquariums
- PRO-DS-6: 6 independently controlled aquariums
Each manifold block includes its own precision needle valve and integrated bubble counter, allowing every connected aquarium to be adjusted independently while sharing a single regulator and CO2 cylinder.
Compatible manifold blocks may also be added later until the six-output configuration is reached.
View GLA Modular Manifold Expansion Blocks
Refillable 5 lb Aluminum CO2 Cylinder
The PRO-DS CO2 System includes a refillable 5 lb aluminum CO2 cylinder with a standard CGA-320 connection. The cylinder ships empty and must be filled by a local CO2 or compressed-gas supplier before use.
One- and two-cylinder package options are available. Select the cylinder quantity that best fits your installation and CO2 supply needs when ordering.
Important: CO2 cylinders ship empty.
Engineering & Performance
- Dual-Stage Pressure Regulation: Two-stage architecture designed for increased working-pressure stability
- Laser-Precision Metal-on-Metal Valve Seat: Engineered for consistent regulation and long-term operation
- Multi-Stage Stainless Steel Micron Filtration: Helps protect internal pneumatic components from contamination
- Precision Needle Valves: Independent fine adjustment for each manifold output
- Integrated Bubble Counters: Visual CO2 flow monitoring for each connected aquarium
- Dual Pressure Gauges: Separate monitoring of cylinder pressure and regulator working pressure
- Integrated Pressure Relief Valve: Provides additional system protection
- Premium Pneumatic Components: Selected for precision, reliability, and long-term performance
- USA Inspection & Testing: Each regulator is pressure tested and leak checked prior to shipment
Specifications
- Installation: CGA-320 standard USA CO2 cylinders
- Pressure Reduction: Dual-stage
- Pressure Monitoring: Separate cylinder-pressure and working-pressure gauges
- Output Pressure Range: 0–140 PSI
- CO2 Distribution: Selectable 1–6 aquarium modular configuration
- Output Control: Independent precision needle valve for each manifold block
- Flow Monitoring: Integrated bubble counter for each manifold block
- Included Cylinder: 5 lb refillable aluminum CO2 cylinder
- Cylinder Quantity: One or two cylinders selectable at purchase
- Included Tubing: 10 feet of CO2-resistant aquarium tubing
What’s Included
- GLA PRO-DS Dual Stage CO2 Regulator
- Selected PRO-DS-1 through PRO-DS-6 modular manifold configuration
- Precision needle valve for each selected manifold output
- Integrated bubble counter for each selected manifold output
- Integrated electric solenoid
- Cylinder-pressure gauge
- Working-pressure gauge
- Selected quantity of 5 lb aluminum CO2 cylinders (ships empty)
- 10 feet of CO2-resistant aquarium tubing
- GLA OEM CO2 tank seal
Please Note: A compatible diffuser, inline atomizer, or CO2 reactor is required to deliver CO2 into the aquarium and is sold separately. The included CO2 cylinder ships empty and must be filled locally before use. For added protection against backflow, we recommend using a compatible inline check valve in your CO2 installation.
Frequently Asked Questions
Does the PRO-DS CO2 System include everything I need?
The system includes the PRO-DS regulator, selected modular manifold configuration, refillable CO2 cylinder, CO2-resistant tubing, and tank seal. You will also need a compatible diffuser, inline atomizer, or CO2 reactor to introduce CO2 into the aquarium. For added protection against backflow, we recommend using a compatible inline check valve in your CO2 installation.
Does the CO2 cylinder arrive filled?
No. CO2 cylinders ship empty and must be filled by a local CO2 or compressed-gas supplier before use.
Why are one- and two-cylinder options available?
The system can be ordered with either one or two 5 lb aluminum CO2 cylinders. Select the cylinder package that best fits your CO2 supply and installation needs.
What is the benefit of dual-stage regulation?
Dual-stage regulation reduces cylinder pressure through two pressure-reduction stages, providing additional working-pressure stability as cylinder pressure changes and reducing the likelihood of end-of-tank pressure increases.
How many aquariums can the PRO-DS System run?
The system can be configured with one to six manifold blocks. Each block provides one independently adjustable CO2 output with its own precision needle valve and bubble counter.
Can I expand the manifold later?
Yes. Compatible GLA modular manifold blocks can be added as your aquarium system grows, up to the six-output configuration. When expanding an existing regulator, select the manifold generation that matches your regulator because G2 and G3 manifold blocks are not cross-compatible.
Do all connected aquariums receive the same amount of CO2?
No. Each manifold block has its own precision needle valve, allowing CO2 flow to be adjusted independently for each aquarium. This is useful when connected aquariums have different volumes, plant mass, circulation patterns, or CO2 requirements.
Can different aquariums use different CO2 delivery methods?
Yes. Individual outputs may be connected to compatible diffusers, inline atomizers, or reactors provided the connected equipment is operated within its required pressure and flow range. Working pressure is shared by the regulator, while CO2 flow is adjusted independently at each needle valve.
What makes the PRO-DS different from the DS-Mini?
Both the PRO-DS and DS-Mini use dual-stage pressure regulation and modular manifold systems. The PRO-DS is GLA’s full-size dual-stage platform with a 0–140 PSI output range and separate gauges for cylinder pressure and working pressure. The DS-Mini provides dual-stage regulation in a smaller overall footprint with a 0–60 PSI output range and a single working-pressure gauge.
Why does the PRO-DS have a 0–140 PSI output range?
The expanded output-pressure range provides additional configuration flexibility for applications that require higher working pressure. Most aquarium installations will not require the maximum available pressure, and working pressure should always be adjusted to the requirements and operating limits of the connected CO2 equipment.
What do the two gauges monitor?
One gauge monitors CO2 cylinder pressure and the second monitors regulator working pressure. This allows both pressures to be viewed independently during setup and operation.
What size aquarium can I use the PRO-DS on?
The PRO-DS is not restricted to a specific aquarium volume. Appropriate CO2 delivery depends on plant demand, lighting, circulation, diffusion method, surface agitation, and overall system configuration. Its modular architecture also allows one regulator to support multiple aquariums when configured appropriately.
Is the PRO-DS suitable for beginners?
Yes. Dual-stage regulators are not inherently more difficult to operate during normal aquarium use. The PRO-DS is suitable for both beginner and experienced aquarists who want premium dual-stage pressure regulation, expanded working-pressure capability, dual-gauge monitoring, and long-term modular flexibility.
Choosing the Right GLA CO2 Platform
The GLA GRO is our streamlined single-stage platform for aquarists seeking compact, precise CO2 control. The DS-Mini combines dual-stage pressure regulation with a compact modular design, while the PRO-DS is our full-size dual-stage platform with expanded pressure range, dual-gauge instrumentation, and modular configuration options.
The PRO-DS CO2 System packages the PRO-DS regulator with a refillable aluminum CO2 cylinder and CO2-resistant tubing, providing a configurable foundation for single- or multi-aquarium planted CO2 installations.
Compare GLA CO2 Regulators & Systems
GLA CO2 Equipment
Green Leaf Aquariums specializes in planted aquarium CO2 equipment engineered around precision, reliability, and long-term performance. GLA regulator systems are built specifically for the demands of nature aquariums and high-tech planted aquarium environments.
Each GLA regulator is individually inspected and tested in the USA prior to shipment to help ensure dependable operation and consistent performance.
Support & Warranty
Return Policy: Due to the technical nature of pressurized aquarium CO2 equipment, this item is non-returnable and non-refundable. Qualifying defects remain covered under the GLA Limited Lifetime Warranty and are handled separately through warranty support. Please contact GLA prior to ordering if you need assistance with product selection, installation, or compatibility.
- Limited Lifetime Warranty: Regulator covered against qualifying defects in materials and workmanship
- Lifetime Support: Expert assistance available
- Installation Guidance: We’re here to help you get started
Limited Lifetime Warranty: GLA CO2 regulators are covered by a limited lifetime warranty against defects in materials and workmanship for the original purchaser. This warranty is non-transferable and applies only when the product is used in accordance with Green Leaf Aquariums, LLC (GLA) guidelines and standard operating practices.
Warranty coverage applies only to products purchased directly from greenleafaquariums.com or authorized sales channels. Proof of purchase is required for warranty claims.
This warranty does not guarantee product performance for the lifetime of the purchaser. Product lifespan may vary based on usage, installation, maintenance, and operating conditions.
- Coverage applies only to manufacturing defects under normal use
- GLA reserves the right to repair, replace, or issue store credit at its sole discretion
- If a product is discontinued, a comparable replacement or credit may be provided based on product condition and age
Warranty Exclusions:
- Improper installation, misuse, neglect, or accidental damage
- Use of improper tools, fittings, or excessive force
- Modifications, alterations, or unauthorized repairs
- Damage caused by contamination, corrosion, or improper gas supply
- Normal wear, cosmetic wear, or external damage that does not affect normal functionality
Important: A wrench should only be used to secure the regulator to the CO2 cylinder. Damage resulting from improper use of tools, excessive force, or incorrect installation methods is not covered under this warranty.
GLA is not responsible for damage caused by improper installation or use. However, repair services and support may be available for a fee.
CO2 cylinders, tubing, cartridges, and other consumable or accessory items are not covered under the regulator warranty unless otherwise specified.
For complete warranty coverage, exclusions, claim requirements, and terms, please review our Shipping, Returns & Warranty Policy.
Customer Reviews
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Undoubtedly the best aquarium co2 system.
By far the best experience I have had purchasing and using a co2 system for my planted aquarium. Packaging was top notch. I really like the quality of everything especially when comparing it to my previous system. Super high class kit all around.
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Aquacsapings best co2 system.
I have had this system now for about 7 months. Its been flawless since day one. If your looking for a co2 system from a company who designed and built the modular manifold, look no further. Nobody else can claim this prize but GLA. You get expert tech support from the actual designers of the modular manifold system. You have a support system just a click away at your finger tips. They are located in north Florida and not overseas. You will be hard-pressed to find a company like GLA who does the work and support like they do. I used the instructions that came with the system to install the kit but you can also look at the links they provide. In all its quite simple. Even my wife loves the co2 system and has no idea whats going on lol. The quality of the build is superb. I would advise on keeping it clean in orderfor it to stay so damn pretty. I wish the rest of my equipment looked this nice. I know I will be one of the first to buy the new canister filter they are coming out with. Facts!
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co2 regulator
quality product, commercial grade regulator
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GLA Pro-DS-1 Dual Stage CO2 System
I had a paintball tank with an “Amazon special” regulator. Switched to this system and all I can say is…”Why in the world did I wait so long?! I was reluctant a bit because of the price but I figured if the quality is there then I can accept a higher price. THE QUALITY IS THERE! I purchased the regulator, tubing (very nice that came with it), check valve, 5 lb tank, 70mm Atomic Diffuser with built in check valve, brass Permaseal (which I can’t recommend enough) and they threw in the GLA Substrate Fertilizer Caps. Zero issues hooking everything up and getting regulated. If you’re on the fence…get off! This is the REAL DEAL!
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The best co2 system on the market.
Seriously, your not going to find a better more high quality co2 system anywhere. You get what you pay for and Green Leaf Aquariums co2 systems are by far the pinnacle in the industry. This is my 4th system after my previose kits from Amazon all failed with tragic endings for my fish. With Green Leaf Aquariums co2 systems you are getting the absolute best in the industry. They have decades of service providing co2 systems so why bother buying cheap when you get US based customer service right at your finger tips. I love the way the co2 system came packed, and the bonus stickers! Quality outshines all my other trash and I even kept the packaging, not even sure why lol.
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High quality and realiable
I am currently running two tanks with this system and I am very pleased. My established tanks has improved a lot and my new nano tank is growing some awesome Montecarlo also from GLA. Works as intended and it is very high quality.
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Buy with confidence from GLA!
I was so happy to find GLA. They helped me choose the correct system to fit my needs and boy are my plants super happy. First, customer service was second to none. The delivery was absolutely exceptional. Beautiful packaging with super easy to follow instructions... I was shocked, I never installed a high pressure system before. Im so proud of myself lol. The quality of the system is everything I could wish for. Thank you GLA for making this whole process so enjoyable. Best, Krista
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The very best aquarium co2 system.
Previouse to my GLA system I was using competing brands thinking that saving a few dollars was the correct way, I was totally wrong. I wish I could post photos to this review so you can see the difference between a co2art regulator and a GLA regulator. Its a night and day difference. The design of the GLA is totally different, its much larger. I learned this is because GLA uses two large opposing internal diaphragms. This equates to an actual dual stage. Whereas the previous models did not incorporate this. This is why they are so cheap in design and cost. The functional aspect was of great relief. I was able to tune in my co2 bubble rate with ease. It stays put everyday and the only thing I do is top off my bubble counter water. Customer service has been tremendous. I actually have not required much help, but they did help with changing my tubing color. Working with a real US based company has been a real treat, thank you GLA.
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The best co2 system in the aquarium hobby.
Keeping this short and sweet as Im not much for reviews but I feel GLA is worth the time. I contacted GLA to help with a unique installation where the client tank at 1,000g required stable reliable co2 delivery. After a few short emails to Robbie at GLA they had a map of exactly what I would need. Customer support was A+. Shipping as fast as anybody could expect. Packaging was outright amazing, they should give classes to the rest of the buffoons who dont know how to pack. Quality, the feeling alone will tell you rite away when you hold one of these in your hand. Its not a dinky aluminum can like toy like you see with the other makes. This is an absolute true dual stage, big long body with 2 real working internal diaphragms. Top quality on every level and out client is totally happy. That makes us happy, we will be using GLA co2 systems in all of our client installations. Thank you GLA-Team!
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Worth every penny.
This is my 3rd regulator from GLA. Ive been a regular since they opened in 2006. I still use all the other models from the previous decade and they work like they did from the first day I installed them. GLA is a family owned company so you are working directly with the manufacturer. I love that they are located in the US and the service is speedy. Its been wonderful watching GLA bloom into something outstanding. You can not go wring with a GLA co2 system, they are the original when it comes to aquascaping vitals.
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The best co2 system Ive ever used.
Coming from a lab setting perspective I can say this co2 system is the best system you can find. I have several others from GLA competitors which I will not name, but they are in no way the same caliber as GLA. Ive been with GLA since I started aquascaping in 2006. GLA was just a baby lol. This new DS-1 Co2 system is truly superior in build quality. If your hesitant just email them and they will be happy to provide reference photos of the competitors. That alone will be enough to scare you away from anything else. I use GLA co2 systems oddly for more than just my aquascapes. I work for the US government in a lab setting where we use GLA co2 systems to calibrate co2 sensors. There is a reason why we use GLA which I will not go into detail. I can say that GLA co2 systems are like no other because working for the government we have strict protocols on materials used in our lab testing. Long story short, GLA is the cats pajamas.
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Turn Key co2 system with super service.
Ive never owned a co2 system before so this is my first as I dont have any reference for any other. I can say that it definitely feels like the most well built piece of aquarium equipment I own. I was nervous about using co2 but the instructions made everything so simple. If I was able to install this in 10 minutes without a hiccup anybody can. Loved the fast shipping and superb packaging. The best part about the whole experience was GLA has actual full complete co2 systems like nobody else. These guys have been building co2 systems since 2006, why go anyplace else? From what I understand they invented the modular manifold block. All the more reason to go with GLA.
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Best co2 system experience hands down.
This is my second attempt at a high tech tank after my previous aquascape was a failure due to poor planning. Well, needless to say Im planning correctly and have had my GLA DS co2 regulator for 4 months now and could not be happier. Im confident you will love this regulator as much as we do, it not only looks like a true working dual stage but it actually is the nicest piece of aquarium equipment I own. GLA was prompt and extremely helpful in helping me replace my previous mistake. You have a GLA customer for life. Thanks Laura for all the guidance!
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Sooo much better!
I dont have much to compare this regulator to as its only my second one. What I can say is that the GLA DS-1 co2 regulator is leaps and bounds to what I previously had. This regulator is a true work of art.
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Excellent System
Purchased this system for my 100 gallon tank at work (my first foray in CO2) and was so impressed with it that I bought a second identical system for my tank at home. The setup was relatively easy with clear instructions. The PH controller works like a charm. Since I got it up and running the plants are growing like crazy, and I haven't had to adjust anything. It's expensive, but I feel it is well worth the money. I had an issue with my diffuser not functioning correctly initially on the first system, but the company sent me a replacement by priority mail immediately. Before the replacement arrived the diffuser started diffusing (probably a stuck check valve). Impressed with GLA.
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PRO-DS STYSTEM
New to the hobby.. I always prefer buy the best. And man did GLA deliver!! I bought the pro-ds for my 75 gallon planted tank and after unboxing the meticulously packed product I knew I had the best!!! Easy to install, easy to follow instructions (you can’t f up). And within minutes they responded to a question I had while setting up. And must I add.. IT’S FREAKING GORGEOUS with impressive build quality! Shout out to Orlando!! Thanks for your help
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Co2 system
I bought this as my first Co2 system vs buying cheap and working my way up to quality. It appears to be really well made, it was easy enough to put together. The packaging for everything was mint and it showed up very quickly. I however, had a problem with the check valve that was sent with it. It didn't matter what I did, it continued to allow water through the tube. (I don't know if I just got a faulty one or if others have had the same problem)This is why I took a star off. I'm currently using a cheap plastic one (which is holding the water at bay) while I wait for a better quality one to come from a local aquatic store.
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Worth every penny!
Fabulous co2 system. This GLA DS co2 system replaced my old kit that was only two years old until it fell dead on a Friday. I contacted GLA that evening and had my co2 system in 2 days. Upon arrival I was totally amazed at the build quality,packaging and service. Dont wait like I did, go with GLA from the start. It was super nice working with them directly especially being a legit USA based company. Love my GLA co2 system!
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Excatly what I wanted from GLA
So glad to finally have a GLA co2 system for my 60p. This system is flawless, from packaging to installation process. The regulator is very well built and the needle valve is solid. GLA complete co2 system purchase was no brainer. GLA is a full service co2 system specialist shop with fantastic prices, albeit not the least expensive, but then again what low cost item every lasted? Just remember your buying a complete system from a reputable company who knows there stuff. Working with GLA has been a treat in comparison to who I was dealing with before. And they are located in Florida, the sunshine state!
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Excellent build quality
Very happy with this co2 system. Its been an absolute dream in comparison to my previous co2 system. Was very happy to be able to purchase a true complete co2 kit from one place, with actual co2 experts. Its been almost 3 months with this system. I love it.
