Description
GLA PRO-DS Dual Stage CO2 System (Modular)
The GLA PRO-DS CO2 System is a complete, professional-grade solution designed for serious planted aquariums. Built around our dual-stage regulator platform, this system delivers unmatched pressure stability, precision control, and long-term reliability.
Designed for aquarists who demand consistent performance, the PRO-DS eliminates end-of-tank pressure fluctuations and provides stable CO2 delivery throughout the entire life of your cylinder.
Who This Is For
- Advanced aquascapers and high-demand planted tanks
- Multi-aquarium setups
- Users who want maximum stability and long-term reliability
If you are looking for the highest level of CO2 control and a system that can grow with your setup, the PRO-DS is the ideal solution.
What’s Included
- GLA PRO-DS Dual Stage CO2 Regulator with modular manifold (expandable)
- 5 lb aluminum CO2 cylinder (ships empty)
- CO2-resistant aquarium tubing (10 feet)
- Nylon CO2 tank seal
Why Dual Stage Matters
Dual-stage regulators reduce CO2 pressure in two steps, eliminating the fluctuations commonly seen in single-stage regulators as the cylinder empties. This prevents “end-of-tank dump” and ensures stable CO2 output for consistent plant growth.
- No end-of-tank pressure spikes
- Consistent working pressure from full to empty
- Improved stability for sensitive or high-tech aquariums
Modular Manifold System
The PRO-DS features a fully modular manifold system, allowing you to expand CO2 distribution to multiple aquariums using a single regulator. Additional manifold blocks can be added or removed as your setup evolves.
- Start with a single aquarium
- Expand to multiple tanks as needed
- Independent control for each aquarium
- Clean, scalable system design
How the Manifold System Works:
- 1 Block → 1 Aquarium
- 2 Blocks → 2 Aquariums
- 3 Blocks → 3 Aquariums
- 4+ Blocks → Expand as needed (up to 6 blocks)
Each block includes its own precision needle valve, allowing independent CO2 control for each aquarium. Each block operates independently, allowing precise CO2 adjustment for every aquarium.
Key Features
- Dual Stage Regulator: Eliminates pressure fluctuations and ensures stable output
- Modular Manifold: Expandable CO2 distribution system
- Precision Needle Valve: Micro-adjustment for accurate CO2 dosing
- Integrated Solenoid: Automates CO2 on/off with a timer or controller
- Dual Gauges: Monitor cylinder pressure and working pressure
- Premium Construction: Built with high-grade pneumatic components
Performance & Design
- Laser precision metal-on-metal valve seat
- Multi-stage stainless steel micron filtration
- Integrated pressure relief valve (PRV)
- Pressure tested and leak checked prior to shipment
- Designed and assembled in the USA
Important Notes
- CO2 cylinder ships empty and must be filled locally
- A diffuser or reactor is required for in-tank CO2 delivery (sold separately)
- Additional manifold blocks can be added for multi-tank setups
Specifications
- Installation: CGA-320 (USA standard CO2 cylinders)
- Pressure Reduction: Dual Stage
- Output Pressure Range: 0–140 PSI
- CO2 Distribution: Single aquarium (expandable)
GLA CO2 Equipment
Designed in the USA, GLA CO2 regulators represent our highest standard of precision engineering and long-term reliability. Each unit is built using premium pneumatic components and rigorously tested to ensure consistent, dependable performance in demanding aquarium environments.
Trusted by aquascapers worldwide, GLA CO2 equipment has set a benchmark for quality—delivering professional-grade performance for high-tech planted aquariums and advanced multi-tank systems.
FAQ
What is the benefit of dual-stage regulation?
Dual-stage regulators prevent pressure fluctuations as the CO2 cylinder empties, providing consistent output and eliminating end-of-tank dump.
Can this run multiple aquariums?
Yes. The PRO-DS system uses a modular manifold design that allows you to expand CO2 distribution to multiple aquariums.
Each “block” on the manifold represents one independently controlled CO2 output. When selecting your configuration above, simply choose the number of blocks based on how many aquariums you plan to run.
- 1 block = 1 aquarium
- 2 blocks = 2 aquariums
- 3 blocks = 3 aquariums, and so on
For example, if you are running three planted tanks, you would select a 3-block manifold. Additional blocks can be added later if your setup expands.
Does the CO2 tank come filled?
No. The cylinder ships empty and must be filled at a local supplier.
Is this suitable for beginners?
This system is designed for users who want the highest level of control and long-term performance. Beginners may also use it, but simpler systems are available.
Support & Warranty
- Lifetime Warranty: Regulator covered against manufacturing defects
- Lifetime Support: Expert assistance available
- Installation Guidance: We’re here to help you get started
Limited Lifetime Warranty: The GLA PRO-DS CO2 Regulator included in this system is 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.
This warranty does not guarantee product performance for the lifetime of the purchaser. Product lifespan may vary based on usage, installation, 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 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 damage
- Modifications, alterations, or unauthorized repairs
- Use of improper tools or excessive force
- Normal wear and cosmetic damage that does not affect functionality
Important: A wrench should only be used to secure the regulator to the CO2 cylinder. Damage resulting from improper use of tools 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, and other consumable or accessory items included with this system are not covered under the regulator warranty unless otherwise specified.
Proof of purchase may be required for all warranty claims.
Customer Reviews
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This is the best co2 system for aquariums.
I have an electronic carbon doser and its an absolute shitbox. I then purchased the Co2Art regulator, yet another shitbox. I now have several shitbox regulators that hold no candle to GLA. When I got the GLA I just knew the fight was over. Whatever GLA has built in this regulator its doing it right! Ultra butter smooth flow control va absolute madness. With the Co2Art every time the temp changed in the room the bubble rate would change, WTF! This GLA regulator is wayyyy bigger and is 100% a more substantial build. Don't settle for a shitbox, buy GLA!
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This is the best co2 system available.
This is not my first but I have a feeling it will be my last. I have a collection of co2 systems since being in the aquarium hobby from the Dupla days. I also have many of GLA competing brands in my house so this review is well merited. My experience with GLA was like no other, from customer service to delivery, which was processed exceptional fast. Arrival of the package I could tell I was in for a treat because GLA packaging was very nice, its was pretty. GLA tape was even nice! Opening the regulator I could tell right away what I was working with. GLA regulators dwarf all their competitors in terms of actual size. GLA seemingly has a legit non-toy like regulator. Extremely well made and the design is flawless. As a veteran in co2 I was set up in minutes, and let me tell you. The system is butter smooth, none of the Amazon or Ebay specials compare because I have those, and you know who Im talking about. Kudos to GLA for staying true to what aquscapers are looking for. Stay innovative GLA we love you guys!
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GLA is the super co2 system.
I love this regulator, no gimmicks and very solid. Much larger than my crappy one and so much better performance. This system was a good buy and has been solid since day one. I do nothing to it, only clean it to keep is shiny and new. I like the US representation with many US made products that come along with the system. Everything arrived packaged very professionally, nothing like amazon. Purchasing from GLA was an absolute pleasure, great company with fantastic support.
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Go with GLA co2 systems.
It only took me one mistake to know I should have gone with GLA from the start. The support system and experience left me refreshed after my previous with a GLA competitor. I dont know much about co2 systems but there is one thing I noticed about this co2 system compared to my other one. It has a level of finesse that just oozes quality. My bubble control was leaps and bounds in easy control. I may not know co2 systems very well but I can tell you GLA co2 systems are worth every penny. You simply will not get the same quality and service with anybody else. Just like GLA told me, stick with the pioneers of this system and you will be left extremely happy.
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GLA is the best of the best in co2 systems.
Just retired my Amazon co2 regulator for this epic GLA system and boy, what a difference. This regulator is built much more substantially than my 2 previous co2 regulators. Its literally 3x the size and feels like a real piece of equipment. My Fzone regulator felt like a paperclip and would not hold a steady bubble rate without daily human interference, I hated it since day one. After installing GLA co2 system I knew right away, it was a blessing. Its been handsfree ever since, we love it!
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Top shelf co2 system from GLA.
Very satisfied with GLA and GLA products in general. New house required all new hardware and must be of best quality and its presence must be appealing. GLA co2 system checked all these marks and is worthy of a 5 star review. I have a long history with co2 system and this space required the best and this is it. Much higher quality regulator body and valve system. Cleaner less bulky design. The solenoid, very very nice. They incorporated a clear housing using a liquid tight chord grip. IP67 all the way. Stainless steel gauges and high quality cylinder with present dating good for 5 years. The tubing we received per our spec in grey color was a nice touch to the installation. Our opening is next month and the space looks terrific. We added the GLA stainless filter and co2 reactor and it is the best. Go to GLA, they are the real pioneers of this new generation of manifold co2 system.
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One bad ass co2 system.
What can I say, its GLA. This kit is super nice. Very well made all around. Lots of American ingenuity from GLA. Fantastic warranty but I doubt I will need it. This thing just pumps out co2 with ease and without any intervention on my part at anytime until time to refill. Over the years I have used many co2 systems. This year is my second GLA system because I loved the warranty and my old 2008 system from GLA. These guys just know what they are doing. They invented this concept of modular co2 systems so aint nobody better at knowing them inside and out like GLA. Because all the others are just riding GLA's coat tails.
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Big upgrade from my co2art regulator.
I just upgraded the tank and filter and at the time was already having issues with my co2art regulator. I was debating sending it back to Europe for repair but the cost was astronomical. After talking with friends at our local fish/plant club I was referred to GLA. I dont know why but this GLA regulator is so much larger than the co2art regulator in all directions. Makes it feel like your using something of substance, vs the more toy like feeling with co2art. It felt like it came out of a vending machine and that would explain its cheap cost and functional issues. This GLA regulator handles everything so much better. I dont mess with it at all but Im always looking at it to make sure its not spazzing out. If your looking to upgrade look no further.
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The best of the best.
The best co2 regulator Ive ever used. Easy to install, silky smooth operation and rock steady.
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Premium quality co2 system.
We spent a few weeks looking over options and in the end went with GLA. After contacting customer support discussing our requirements we landed here. This is a very well put together system. Granted it does not come with a diffuser, its for good obvious reasons. Everything in the box was very well packed, like when you mom packed your lunch box. Everything was just neatly nested. It took us only a few minutes to install and had co2 in the plant beds in no time. Its been working superb for going on 9 weeks now. I keep is clean with a microfiber cloth with some plant based stainless steel cleaner. It helps keep the dust off and keeps nice and shiny new looking. Its the nicest piece of aquarium equipment we own and our tank is 180g. Thanks GLA!
