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GLA PRO-DS-2 Dual Stage CO2 Regulator (2 Block Modular Manifold)

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GLA PRO-DS-2 Dual Stage CO2 Regulator (2 Block Modular Manifold)
GLA PRO-DS-2 Dual Stage CO2 Regulator (2 Block Modular Manifold)
GLA PRO-DS-2 Dual Stage CO2 Regulator (2 Block Modular Manifold)
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GLA PRO-DS-2 Dual Stage CO2 Regulator (2 Block Modular Manifold)
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Pressure Reduction



CO2 Distribution



GLA PRO-DS-2 Dual Stage CO2 Regulator (Modular Manifold)

Our GLA PRO-DS-2 CO2 regulator is built with premium components, perfectly tailored to your planted aquarium, for superior CO2 distribution. We design our CO2 regulators in the USA, handcrafted with premium pneumatic components to provide a distinctly reliable and innovative solution for CO2 distribution. Our CO2 engineers build and test each regulator to order and provide lifelong customer support for each and every regulator we build. Our innovative, forward thinking CO2 technology is highly rated in the planted aquarium community. We have pushed the limits of aquarium CO2 technology, setting a new industry standard for CO2 distribution. We are dedicated to providing professional CO2 regulators and aquarium CO2 systems to the planted aquarium hobbyist and to specialized industries seeking the best CO2 equipment available.

GLA PRO-DS modular CO2 regulators have paved the way in adaptive CO2 distribution. Our innovative modular manifold allows you to add (or subtract) manifold blocks with ease, so you can expand CO2 supply, independently controlled, to multiple aquariums. Our modular CO2 regulators flawlessly and easily adapt to the expansion of your aquarium system, allowing you to use one regulator for multiple tanks, so you can save money and installation footprint. When you invest in our modular CO2 equipment, you get a single regulator that can grow with you and last for years of planted aquarium enjoyment.

  • Professional dual stage regulator body
  • Dual stage CO2 regulator reduces source pressure in two steps to eliminate fluctuation in working pressure, as pressure drops in CO2 cylinder
  • Multistage stainless steel micron filtration inlet and outlet
  • Laser precision metal-on-metal valve seat. 
  • Integrated pressure relief valve (PRV)
  • Micro precision needle valve rotates 360 degrees
  • Innovative, optimal performance 'cool touch' solenoid valve
  • Premium GLA bubble counter with check valve to protect your equipment
  • Premium quality pneumatic components
  • Dual gauge (tank volume and working pressure)
  • No end-of-tank dumps
  • Custom designed, pressure tested, and leak tested in the USA
  • Handcrafted by our expert CO2 engineers for everyday life, so you can enjoy your planted aquarium without worry.
  • We are dedicated to providing unparalleled CO2 technology and setting the industry standard of CO2 distribution excellence.
  • We are confident that our GLA CO2 regulators rise above and outlast the competition.
  • Installation: CGA320
  • Output Pressure: 0 - 140 PSI
  • Tank/High Pressure: 0 - 3000 PSI
  • Modular Manifold: Two block manifold provides CO2 to two aquariums, expandable to multiple aquariums (easily add or subtract manifold blocks to provide CO2 to multiple aquariums)
  • Includes: one nylon seal

Our Standards

Handcrafted Excellence
✓ exceptional care and pride in what we build
✓ bringing our passion to life

Elite Performance
✓ for your next aquascape
✓ and for every aquascape after that

Built to Last
✓ your everyday super CO2 regulator
✓ a regulator that is truly unmistakable

Our Guarantees

Installation Support
✓ dedicated expert installation support
✓ we are here to help you get started

Lifetime Warranty
✓ rock solid lifetime warranty
✓ your peace of mind guaranteed

Lifetime Support
✓ we back what we build
✓ we will be here to help you into the future



Limited Lifetime Warranty: GLA GRO CO2 Regulators are covered under a limited lifetime non-transferrable warranty against defects in materials and workmanship, when used in strict compliance with Green Leaf Aquariums, LLC (GLA) recommended usages, while the goods are under the ownership and control of the original purchaser. The lifetime warranty does not guarantee that the product will perform for the lifetime of the buyer. The actual time that the product can be expected to perform is determined by the highest standard of working time for products of its kind and per the buyers usage and application. If the product is discontinued, the warranty will remain a limited period longer, and then claims will be warranted with a similar product or credit, as determined by GLA, and appropriate to the product's age and condition at time of claim. GLA does not assume any responsibility or make any warranties with respect to items which are modified, altered, abused, misused, damaged, or serviced by unauthorized personnel. The warranty is void if at any time a wrench is used on the regulator, for any purpose, other than to tighten the regulator to the CO2 cylinder. It is important to read instruction guide provided when installing product, for damage due to improper installation is not covered under the warranty, although GLA will happily provide support and service for the product at a determined repair cost.

Customer Reviews

13 reviews

  • 5

    The best of the best is GLA co2.

    Posted by Kirk Detrict on 25th Jan 2024

    Spare no expense and go with GLA. This is a performance based product, no9t a price point co2 regulator. This is a feature rich regulator built with reliable components and GLA's original manifold. Nobody else compares, I said it now fight me! lol JK Jk

  • 5

    Super High Quality Regulator

    Posted by Reza Gorji on 30th Jul 2023

    I love my GLA CO2 regulator. I've had it for a few months now and its performance and reliability are second to none. Thank you GLA for making such a great regulator.

  • 5

    The best co2 regulator Ive even used.

    Posted by Jermain Watkins on 4th Jul 2023

    I consider myself a veteran hobbyist of 44 years. I remember when Dupla introduced co2 to us. I still have my Dupla piston regulator today. I also have many others, Milwaukee,Co2art and my latest an Fzone. In my humble opinion the Dupla was much better than all of these. Fzone did not last me 9 months of use. Im now 4 months into my GLA DS-2 and I can confirm what others are noticing. GLA makes the best co2 systems for aquatics available. Form, fit and finish is all very nice. Super quality all around and customer service has been terrific.

  • 5

    Much nicer than expected.

    Posted by Joshua Visnov on 2nd Jul 2023

    Replaced my shitty Co2Art regulator with this amazing piece of equipment. Yes it cost a tad more, but my god do you notice the difference without even installing it. GLA is also a US based company who designed this system. I absolutely love that fact!

  • 5

    GLA is the superior co2 regulator.

    Posted by Wayne Strawsdale on 26th Jun 2023

    #rd times the charm they say lol. Two regulators less than one year old have failed mechanically. At first I was thinking I was doing something wrong. After using a Co2art regulator that they could not resolve the issue of I went with Fzone, its the same regulator. The crazy part is they both had different issues. My main complaint was the crazy fluctuations. Fast forward to 2023 after using the GLA regulator for 3 months its been a game changer for me. My wife is no longer pissed off and this regulator is a real full sized regulator. As you are aware I was peeved with fluctuations in co2. The performance from these needle valves are just amazing. Effortless and silky smooth. The build quality is much more substantial. It's as if the GLA regulator has double the size and materials being used, so something is clearly better. Id like to thank GLA for the support and quality products. Nice dealing with folks in America vs overseas.

  • 5

    Great Product

    Posted by Reza Gorji on 24th Apr 2023

    Top of the line, high end product. Very easy to set up. And customer service is just a text away.

  • 5

    So much to love!

    Posted by Emily Farmer on 12th Mar 2023

    Finally upgraded from the crap I was recommended. I was using an Fzone product that looked similar, but it was total shit. I had a terrible experience with customer service and lack of. I h ad to reset the tank but I ordered a new co2 system from GLA. Im so glad I did! I could 100% see the difference even before opening the box, I kid you not. It was heavy and much larger. Adjusting the bubble rate was soooooo nice! Thank you GLA!

  • 5

    Top shelf no joke.

    Posted by Daryle McBride on 19th Feb 2023

    No reason to hide this fact, GLA is way better than the garbage Fzone regulator. That was a waste of money and lack luster support. I write this right now looking at both of them and let me say to you people. The Fzone is built like a cracker jack box toy. Not only does it look weird, the needle vales are shit. I never did get them to stay where I put them, no I dont have kids or pets that move needle valves. GLA regulators are what people say. A higher quality premium brand co2 system. Im so happy and relived, I dont fool with my co2 system anymore or think about it.

  • 5

    GLA is the best of the best in aquarium co2 systems.

    Posted by Oscar Mendez on 18th Feb 2023

    One solid year of repetitive homework planning my new studio. I only know of GLA from 2007, when they were on the planted Tank forum when Kyle ran the show. Its just mind blowing to see how far they have come. I learned that GLA is the pioneer and father to the modular manifold system. Im happy to be back and support GLA once again and this regulator was an absolute beauty. I still have my old GLA regulator, but it will not work for my new setup. The precision of the GLA solenoid is impecable. Reminds me of my Burkert solenoid. The precision of the needle valve is like that of the Ideal metering valve on my old GLA regulator. Its a $100 valve alone. The performance is uncanny.

  • 5

    The best planted aquarium co2 regulator.

    Posted by Daniel Hershey on 26th Aug 2021

    I own two GLA regulators because I have two tanks in one area of our home and 2 in another location in our home. I was really happy to find a US based company like GLA. Fantastic customer service and you can guarantee a premium grade product. You will notice this instantly when you open the box. Beautiful work on the packaging GLA Team. Who ever does the design work at GLA has a job at Hershey if they ever need change. Family owned company in the US who does all the design work is exactly who you want to work with. Our tanks are gleaming with new growth but have a long road ahead. Thanks GLA for being so supportive of our project, cheers to the future.

  • 5

    Its the best

    Posted by Nathan Perez on 9th Feb 2021

    Green Leaf Aquariums is known for making the best co2 systems in the industry, so I ordered one. Holy crap was I glad I did. Rock solid and tremendous support. You cant ask for better.

  • 5

    Very high quality co2 regulator

    Posted by Ernesto on 8th Feb 2021

    I was pumped to install this DS-2 co2 regulator on my 2 ADA 60p tanks. You do have to install the 2nd manifold out of the box but GLA provides you will the tools in the box. Installation took 3 minutes and was very easy. I though it would be more difficult but I was totally wrong. You can really feel the quality in the materials used and its much larger than I anticipated. When my family and friends see it they think Im some kind of scientist. The precision feel of the needle valves really connect you to the regulator. It has a cool LED feature letting you know it has power or when its off. All the tools needed for installation and servicing are included. My other regulators did not have any of this. As an engineer I should also note GLA uses IP67 Water tight chord grips in the power supply. Such a nice touch guys. They should market that because its a big deal to me. Stellar quality GLA.

  • 5

    The best CO2 Regulator I've ever Owned

    Posted by Phillip Webster on 2nd Jan 2021

    This is without a doubt the best co2 regulator I have ever owned. Its not the least expensive option in the crowd, but its indeed the best in aquascaping. This GLA DS-2 powers my 250g tank for the last few months and has been such a pleasure to use. Its been so great I have not touched it in months. Its rock solid in performance. I really love the XL bubble counters GLA makes. I have had loads of bubble counters and the GLA bubble counter is an absolute beast. The bubble counter alone weighs as much as some of the old regulators I have. The solenoid is super heavy duty with a butter smooth needle valve. So glad I went with GLA co2 regulator. Green Leaf Aquariums customer service was second to none. Very satisfied and a customer for life.

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