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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High Quality Construction, Reputable Brand - Worth the peace of mind
Building out my first tanks with CO2 and chose GLA because of its reputation across the hobby. Having everything needed from the regulator, modular manifolds, and tank made everything a breeze. Setup instructions online were super simple. In addition to this, I grabbed a CO2 diffuser, CO2 Drop Checker, and Check Valve and was good to go. For the tank, most places near me only do tank exchanges, versus refills. That was my only surprise. Tanks using CO2 already seeing amazing results.
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Best co2 system for planted tanks.
I spent months comparing systems and discussing on forums and various Facebook pages and GLA always comes out on top every-time. I hooked this up to a Milwaukee ph controller and my co2 has been stable 24/7, I couldn’t be happier. My tank is now fully automated with co2,autodosing and my lights. Now all I do is weekly water changes and regular maintenance. GLA products are second to none.
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GLA is the absolute best in the business.
Many many weeks spent researching systems and all the Facebook groups sent me to GLA. Glad I pulled the trigger because it’s absolutely a great purchase. My local stores carry a few known brands but when you get your hands on those you can’t help but think how cheesy they feel for such a premium price. For all those reading my review, here’s what I noticed. UNS,Chihiros and Fzone are all the exact same crap. Two big local stores carry them and ain’t no way I was investing into any of those for that reason. GLA is a huge upgrade all around, better quality build and materials. Customer service was fantastic and shipping was free!
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GLA is my go-to for premium co2 equipment.
These days there are so many cheap knock offs. But this is one thing you don’t want go cheap on. GLA is the best in form and function when it comes to a lot of aquascasping supplies and they are known for co2 gear. Especially this modular solenoid system, they are the original pioneers of it all. This thing is butter smooth and operates on my tank daily without a single glitch. It’s rock steady, built strong and looks fantastic. It dwarfs all other brands by its full sized build. It’s an actual dual stage vs a fake dual stage like you see from Fzone and Co2art. All those are the same junk just rebadged toys. Don’t even bother with that crap, it’s cheap for a reason. Nothing quality comes cheap. Thank you GLA for answering all my questions and helping my wife and I along the way.
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Pro DS Kit
Amazing product, fast shipping and excellent communication with customer service.
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No better co2 system you can buy than GLA.
No question this is the best co2 system you can find. My LFS carries Co2art and UNS. Compared to this system those are mere toys in comparison. Weird part is they were the same price and Co2art and UNS were precisely the same dookie. The guy at my fish store even recommended to buy GLA over Co2art and UNS lol. That’s all I needed to hear. Upon set up this thing is super well made. Having the ability to see all 3 of these GLA makes a considerably larger and finer piece of equipment. I’d never second guess GLA quality these guys build a terrific regulator.
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Best of the very best. The pinnacle in co2 systems.
You can spend all the time in the world like I did looking at co2 systems. After attending the expo in Daytona it’s a no brainer. I saw lots of competing co2 systems everywhere, Co2art,Fzone and a bunch of rebrands that looked exactly like Co2arts and Fzone. When you get a hold of a GLA regulator it’s night and day difference, big ol regulator body and the valve assembly is very nicely made. It’s on my 120cm tank and it’s rock solid everyday. The folks at GLA are also an amazing bunch, friendly and helpful. You should know, GLA invented this solenoid modular manifold system. Why go anywhere else when everybody is trying to copy their designs? That’s why I went with GLA to begin with. The OG’s in co2.
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Awesome product
This system is worth every penny!!! It’s easy to install and I can’t even begin to tell you how wonderful the customer service experience was!! Thank you GLA for great service and products!!!
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Gla pro ds 1
This is my first and only CO2 system so I don't have a lot to compare it again or anything for that matter and I've had it up and running for about a week so I can't actually speak to long-term durability although I don't anticipate any issues. First of all the package arrived quickly well packaged and in good shape. I am putting this on a 75 gallon planted discus tank. So I am trying to be very cautious about adding CO2 and why I chose the GLA is reviews all seem to agree they had the best needle valve. I have the system on a timer and I am introducing CO2 very very slowly. I started with one bubble every 2 seconds I'm up to about a bubble a second. I found it very easy to make these fine adjustments in the rate of CO2 flow. The regulator is very solidly built and I believe it will last a long time. If I choose to put CO2 on any of my other tanks I will get a gla regulator I don't see where the savings versus any other dual stage regulator are that significant for something that's going to last. I believe this is an excellent product and I'm very happy with my purchase
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The best co2 system you can invest in is GLA.
I have experiance with co2 systems from Co2Art and Fzone, I can honestly say those are absolute trash. They were made more like trinkets or toys rather than a quality piece of equipment. Thats exactly what you get from GLA. Quality from top to bottom. We absolutely love the GLA system. Definitely the pride and joy of our aquarium system lol.
