Description
GLA PRO-DS-2 Dual Stage CO2 Regulator (Modular)
The GLA PRO-DS-2 Dual Stage CO2 Regulator is a professional-grade solution designed for advanced planted aquariums and multi-tank setups. Built for precision, stability, and long-term reliability, it delivers consistent CO2 output without the pressure fluctuations commonly found in single-stage regulators.
Engineered with a modular manifold system, the PRO-DS allows you to distribute CO2 to multiple aquariums while maintaining independent control of each line.
Who This Is For
- Advanced aquascapers and high-tech planted tanks
- Multi-aquarium setups (2 tanks)
- Users who demand maximum stability and control
If you are looking for the highest level of CO2 precision and a regulator that can scale with your setup, the PRO-DS is the ideal solution.
Why Dual Stage Matters
Dual-stage regulators reduce CO2 pressure in two steps, eliminating fluctuations as the cylinder empties. This prevents “end-of-tank dump” and ensures stable, consistent CO2 delivery from full to empty.
- No end-of-tank pressure spikes
- Stable working pressure throughout cylinder life
- Ideal for sensitive and high-demand aquariums
Modular Manifold System
The PRO-DS-2 includes a dual-block manifold, allowing you to run two aquariums from a single regulator. Each block provides independent control and additional blocks can be added or removed as your system evolves.
- Two independent CO2 output lines
- Expandable multi-tank CO2 distribution
- Independent needle valve control per 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)
Each block operates independently, allowing precise CO2 adjustment for every aquarium.
Key Features
- Dual Stage Regulator: Eliminates pressure fluctuations
- 2-Block Modular Manifold: Dual aquarium CO2 distribution
- Precision Needle Valves: Independent control for each tank
- Integrated Solenoid: Automates CO2 on/off
- Dual Gauges: Monitor tank 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
- Engineered to meet GLA performance standards and tested to ensure consistent, dependable operation.
Specifications
- Installation: CGA-320 (USA standard CO2 cylinders)
- Pressure Reduction: Dual Stage
- Output Pressure Range: 0–140 PSI
- CO2 Distribution: 2 aquariums (expandable)
What’s Included
- GLA PRO-DS-2 Dual Stage CO2 Regulator with 2-block modular manifold
- GLA OEM CO2 tank seal
The GLA PRO-DS-2 regulator is designed for aquarists who demand precision, scalability, and long-term performance. It delivers professional-grade CO2 control for multi-aquarium setups.
GLA CO2 Equipment
GLA CO2 regulators are engineered to meet our exacting standards for precision, reliability, and long-term performance. Each unit undergoes inspection and testing in the USA to ensure consistent, dependable operation in demanding aquarium environments.
Trusted by aquascapers worldwide, GLA CO2 equipment has set a benchmark for quality—delivering professional-grade performance for aquarists who demand precision, reliability, and long-term results.
FAQ
What is the benefit of dual-stage regulation?
Dual-stage regulators prevent pressure fluctuations as the CO2 cylinder empties, ensuring stable output and eliminating end-of-tank dump.
Can this run multiple aquariums?
Yes. The PRO-DS-2 includes two independently controlled output lines.
Each block provides one CO2 output. This model is configured for two aquariums, but additional blocks can be added later if your setup expands.
Can I expand later?
Yes. Additional manifold blocks can be added as your system grows.
Is this compatible with other regulators?
No. The modular manifold system is designed specifically for GLA PRO-DS regulators.
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: 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 may be required for all warranty claims.
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 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 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, cartridges, and other consumable or accessory items are not covered under the regulator warranty unless otherwise specified.
Customer Reviews
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Best of the best in co2 systems.
My second GLA regulator for my new basement scape. Cant ever go wrong with GLA, a superior build quality and reliability. My old one is 13 years old!
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Big upgrade from Co2art.
Many frustrations were had using Co2art. This has been such a blessing with GLA. Everyday it’s right where I left it. No fictions and no poor craftsmanship. My first Co2art regulator was warrantied out of the box. The alignment of everything was off by 1/4” making everything sit crooked. Then my second unit they sent would not hold bubble rate no matter how many times I adjust the needle valve or psi. Since setting up this GLA regulator it’s held steady since day one. I love the quality and fine needle valve precision. I’m a fan!
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I’d never buy anything less than GLA
If you don’t know by now and you are reading my review you should know GLA is a premium brand. All the other brands are just knock offs and cheaply made. Why people choose that cheap junk like Co2art or Fzone is unbelievable. I’ve owned both those brands and they are total garbage. And for what you pay for those is even worse. It’s a night and day difference with GLA and I won’t use anything less for my aquascapes. Buy once cry once they say.
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GLA co2 regulators are the only way to go.
I’ve owned quite a few knock off regulators like Fzone and UNS. Those two brands are exactly the same manufacturer with different branding. GLA set themselves apart when they invented this technology, and the regulator body is a beast in comparison to those two. Very well made and a precision needle valve is what you want and GLA delivers.
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Best of the very best.
GLA is the panicle of co2 systems and this is my second regulator from GLA. I just gave my old one to my dad. This is even nicer than my old version and has been butter smooth everyday. No fooling around with nothing, it just does its job effortlessly. It’s like a trusty workhorse everyday.
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This is undoubtedly the best when compared to the rest in the field.
You will be very pleased with the quality of this co2 regulator. It’s a higher quality regulator than Co2art, which I’ve replaced with this regulator. I quick notice you’ll see the body of the regulator is significantly larger. It’s much longer like what you would see with a lab grade dual stage. I know this detail because we use them with our co2 lasers at my practice. You can not only notice its quality construction but the delivery in precision is there. Very satisfied with this co2 regulator and should have went to GLA to begin with. Thanks David for helping fix our situation. GLA is in a class of its own.
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GLA is the pinnacle in co2 delivery systems.
I think this is my 3rd co2 regulator and I feel is my last. First two were knock offs of HLA’s work and while they put out co2 they didn’t do it with the level of accuracy I get from GLA. You just can’t compare these with the likes of Co2art or Fzone, those two are just generic as it gets. I still have them, and they will be listed on marketplace this week. GLA is top class gear and now I know why everybody recommends them.
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Very easy to use and works great!
So far I’m loving it. It’s super easy to install and use. I’m new to using C02 in my aquarium so when I first set it up I thought it was defective when I unplugged the solenoid and the bubbles didn’t stop immediately. But GLA customer support is excellent, I texted the customer support number to ask about it and they responded immediately and explained that it can take up to 5 minutes for the bubbles to slow down and stop after it’s unplugged. I appreciate their customer support as much as their great products!
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Top tier in co2 regulators.
If you are reading my review it’s because you landed on aquascapers best co2 regulator. This isn’t bias, it’s just a fact. My original GLA regulator from 2007 would be working today except movers decided to “misplace it”. These guys the originator of this modular co2 regulator system. My old one was made of brass fittings. I watched GLA years ago develop this manifold system. Then as the knocks off copied them the cheap stuff started rolling out. I’ve seen them at my LFS and there is no comparison between GLA and the knock offs. You get precision quality and a big ol regulator body vs the janky flat body toy looking ones. I was honored to buy the upgraded dual stage manifold system. Best of the very best.
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GLA is the very best in aquarium distribution.
Coming from a Co2art regulator I can confirm GLA is the premium brand. I’ve even used lesser quality than Co2art before that and they’ve all broken in short time, gave me issues with constant adjustments. Today I come to buy a second unit for our office tanks. Everything is higher quality, needle valves, solenoids everything. You’ll be glad you chose GLA.
