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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The best of the best!
Super impressed, very high quality and a level of precision we can stay satisfied with. Do not confuse GLA with anything else on the market because have own them. GLA is simply better quality.
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Green Leaf Aquariums superior co2 system.
Many systems had over the decades, some work meh others barely at all after only a few months. I now have GLA co2 system 1 year 8 months and it’s unbelievable. Superior quality and craftsmanship. Customer service was pleasant and will be doing long term business. Buy GLA
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Top of the line co2 system.
I already have one co2 system in place from GLA's competitor. it still works, however I do have to wrestle it which is not my favorite. So I decided to go with GLA, and now I see what the fuss is about. Its a different ball game entirely, finer precision in the needle valve, better psi adjustments which to me was a game changer. It is so smooth to operate. More importantly a lot of the stuff is US made and designed, all the way to the GLA co2 tubing. The GLA regulator is one of thos piece of equipment you just want to take care of and know it has your back with repeatability and reliability. Its a high quality piece of the OG's of co2 system.
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Buy GLA Co2 System.
I made the mistake of buying cheap from Amazon, nightmare situation. Noting worked well, caused havoc in my aquarium due to poor quality in the build. After getting in touch with GLA and receiving my system, its been night and day. Works so smoothly, no BS customer support. The new era in support where they dont put up with no bull crap lol.
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We are in love with GLA, aquarium products of course lol.
We are big fans of GLA and this system has done amazing things for our aquascape. Its looks brilliant under the tank and has done wonders for our plants. GLA has us hooked!
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Highly recommend GLA Co2 systems.
Pleasant experience with GLA. Very friendly staff with speedy delivery. Upon receipt, packaging was exceptional, something you can appreciate these days. We filled the cylinder and were up and going the next day. We use the GLA co2 reactor and could not be happier. If your looking for high quality co2 system you cant buy on Amazon look no further, this is the real deal. Thanks GLA
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So glad I went with GLA.
After spending what felt like forever planning my 120cm tank and researching and emailing every vendor who would help with with co2. GLA stood tall amongst the rest. Real quick, I work in product development fora a fortune 500 company and there are a few things to remember. You cant put a price on experience and knowledge. That means GLA has more years of knowledge about co2 systems and how they fit in every scenario. I learned that GLA paved the way for what you see in co2 systems today. I even verified this with their Facebook page, and you really have to scroll back years to see it. GLA is the pioneer of the modular manifold co2 system. Everything else is just a replica of their work. I can relate to this in a big way, obviously. Knowing all this is why I chose GLA, the original true full sized dual stage regulator and modular manifold system. I went to a few LFS around the city and I was able to take my GLA regulator with me to compare it to the in-store brands. I can say this with 100% clarity, there is no comparison. GLA is full sized with two internal diaphragms. PSA! I saw Fzone,Co2-Art,UNS, all 3 of these were exactly the same to eachother. These were very tiny regulators I was surprised so many wan to use them(cheap). To me they looked like something you win in a vending machine lol. You just have to hold them in your hand to see what Im relaying in this review. If you ever look at those cheap knock off brands, you will notice they are the exact same, flat and cheap. Thats the very best way to describe them.
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Top of the line
Decided to spring for the industries best and I’m glad I did. Setting up my first CO2 system ever for a 40g planted tank. David and the team at GLA provided top notch service including customizing the color of my CO2 tubing and mailing a missing price of the order at no charge (I was fully transparent that I couldn’t find the part and was not sure if I accidentally discarded it or it wasn’t included in the shipment. They took care of it without any issue). I’m fully confident that this setup will last for a lifetime! Many thanks to the team at GLA
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Thank you GLA!
I will try to make this short but sweet because GLA customer service was exceptionally patient and nice to us. We needed a system in a hurry because we recently setup our 2023 IALPC aquascape and was reading for photos when we noticed our drop checker was not moving beyond blue, it was before and all the sudden it was not. We contacted the company we ordered from but there was a delay because we did not realize they were international(not US based). Once communication was underway they sent a replacement and all was good, so we thought. $ days later we started to experience the same issues with the co2art regulator. This time however the solenoid was not receiving power no matter what we did. After much frustration we gave up and put the regulator to bed with all of our other aquarium garbage. Fast forward to now because we were about to call it quits. My husband has spent tens of thousands on this aquascape at 180cm and time was running out. When the GLA system arrived we knew right away, this was quality. The GLA system is not even remotely the same category of co2 system. The best way I can describe this is better said by my husband. In his words, Co2art is a blatant knock off of GLA's superior product. Whats more strange is we dont know why so many told us to go check out Co2art, its been absolute garbage and in our opinion a waste of global resources. After drooling over the GLA system its been up and running everyday without a hiccup. My husband even polishes the GLA system under our tank(full Infinite filter,reactor and DS system). Its his pride and joy and we are honored to support GLA, the original US based company who invented everything you see. Dont be misguided like we were, go with GLA you will not regret it.
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Aquarium Co2 System
Loving our GLA co2 system. I was referred to from Planted Tank Forum.https://www.plantedtank.net/forums/ I was clearly frustrated with my Co2art co2 regulator and the people the pointed me here. Now this is only my second co2 system, and I would not consider Co2art a co2 system. Especially after having the GLA to see first hand. GLA is so much better quality all around. You can clearly see the build structure alone with GLA is much nicer than co2arts. I now have trouble free co2 in my house. Folks, buy once and go with GLA, because all the stuff they have is nice!
