Description
GLA MINI-DS Dual-Stage CO2 Regulator (Modular Manifold)
Compact dual-stage CO2 control with room to expand.
The GLA MINI-DS Aquarium CO2 Regulator combines dual-stage pressure regulation, precise CO2 adjustment, and automatic operation in a compact design. Its modular manifold allows you to control one planted aquarium or independently adjust CO2 flow to as many as six aquariums from a single regulator and CO2 cylinder.
Choose the number of manifold outputs you need when ordering, with the option to add compatible expansion blocks later. Each MINI-DS regulator is individually inspected, pressure tested, and leak checked in the USA before shipment.
At a Glance
- Pressure Regulation: Dual-stage design
- Cylinder Connection: CGA-320 standard USA CO2 cylinders
- CO2 Distribution: Selectable 1–6 outlet modular manifold
- Independent Adjustment: Precision needle valve for each outlet
- Flow Monitoring: Integrated bubble counter for each outlet
- Automation: Integrated electric solenoid
- Pressure Monitoring: Working-pressure gauge
- Expansion: Compatible manifold blocks can be added later
Best For
- Planted aquariums of various sizes
- Aquarists who prefer compact dual-stage CO2 regulation
- Single aquariums with the option to add more CO2 outputs later
- Multiple aquariums requiring independent CO2 flow adjustment
- Installations where equipment space is limited
- Automatic daily CO2 operation with a timer or compatible controller
Why Choose the GLA MINI-DS?
MINI-DS combines stable pressure regulation, precise flow adjustment, and expandable CO2 distribution in one compact regulator. Here's how its features benefit your aquarium installation.
- Dual-Stage Pressure Regulation: Reduces cylinder pressure in two stages to help maintain a consistent working pressure as the cylinder's CO2 supply decreases.
- Compact Design: Provides dual-stage regulation in a smaller regulator assembly, making it easier to accommodate in aquarium cabinets and other limited spaces.
- Expandable Modular Manifold: Choose one to six CO2 outputs depending on how many aquariums you want to supply. Compatible manifold blocks can also be added later.
- Independent CO2 Adjustment: Each manifold block includes its own precision needle valve, allowing you to adjust CO2 flow separately for each connected aquarium.
- Individual Bubble Counters: Every manifold output includes a bubble counter, providing a visual reference when adjusting CO2 flow to each aquarium.
- Automatic CO2 Control: The integrated electric solenoid allows CO2 injection to turn on and off automatically using a timer or compatible controller.
- Easy Pressure Monitoring: The working-pressure gauge displays the regulator's adjusted output pressure.
- Integrated Protection: A pressure relief valve provides additional protection for the regulator and connected equipment.
- Durable Construction: A precision metal-on-metal valve seat and quality pneumatic components are designed for dependable long-term operation.
- USA Inspection & Testing: Every MINI-DS regulator is individually inspected, pressure tested, and leak checked in the USA before shipment.
Expandable Modular Manifold System
The MINI-DS manifold allows one regulator and CO2 cylinder to supply multiple planted aquariums. Select your preferred manifold size from the available product options.
- MINI-DS-1: One independently controlled CO2 outlet
- MINI-DS-2: Two independently controlled CO2 outlets
- MINI-DS-3: Three independently controlled CO2 outlets
- MINI-DS-4: Four independently controlled CO2 outlets
- MINI-DS-5: Five independently controlled CO2 outlets
- MINI-DS-6: Six independently controlled CO2 outlets
Each manifold block has its own precision needle valve and integrated bubble counter. All outlets share the regulator's working pressure, while CO2 flow can be adjusted independently for each aquarium.
Expanding Later: Compatible manifold blocks can be added as your aquarium collection grows, up to the six-outlet configuration.
View GLA Modular Manifold Expansion Blocks
What's Included
- GLA MINI-DS Dual-Stage CO2 Regulator
- Selected modular manifold configuration (1–6 outlets)
- Precision needle valve for each selected manifold output
- Integrated bubble counter for each selected manifold output
- Integrated electric solenoid
- Integrated working-pressure gauge
- GLA OEM CO2 tank seal
What You'll Need Separately: A compatible refillable CO2 cylinder, CO2-resistant tubing, and a diffuser, inline atomizer, or reactor are required to complete your CO2 installation. These items are sold separately.
Need a cylinder too? Explore our GLA MINI-DS Complete CO2 System, which combines the MINI-DS regulator with a refillable aluminum CO2 cylinder and CO2-resistant tubing.
Technical Specifications
- Model: GLA MINI-DS Dual-Stage CO2 Regulator
- Pressure Regulation: Dual-stage
- Cylinder Connection: CGA-320, standard USA CO2 cylinders
- Adjustable Working Pressure: 0–60 PSI
- Pressure Monitoring: Integrated working-pressure gauge
- CO2 Distribution: Modular 1–6 outlet configuration
- Flow Adjustment: Independent precision needle valve per outlet
- Flow Monitoring: Integrated bubble counter per outlet
- Automation: Integrated electric solenoid
- Pressure Relief: Integrated pressure relief valve
- Valve Seat: Precision metal-on-metal
- Expansion: Compatible GLA modular manifold blocks
- Manifold Compatibility: G2 and G3 components are not interchangeable
- Quality Control: Individually inspected, pressure tested, and leak checked in the USA
The GLA Difference
20 Years of CO2 Expertise. A Commitment That Goes Beyond the Equipment.
For 20 years, Green Leaf Aquariums has specialized in CO2 equipment for planted aquariums. Throughout that time, we've remained committed to advancing the quality, precision, and reliability of aquarium CO2 regulation. Our experience, long-standing manufacturing partnerships, and close relationships with our customers have helped shape the equipment we offer today.
We don't believe in standing still. We work closely with our manufacturing partners to continually refine our products, incorporate real-world customer feedback, and introduce meaningful improvements. From precise piston-type regulation to advanced dual-stage designs and modular expansion, GLA has consistently worked to raise the standard for aquarium CO2 equipment through thoughtful engineering and innovation.
Every GLA CO2 regulator is individually inspected, pressure tested, and leak checked in the USA before shipment. We take quality control seriously because we understand the importance of dependable CO2 delivery and the trust our customers place in our equipment.
But what truly sets GLA apart is the company behind the products. We're a small business with a personal commitment to the people we serve. We take pride in helping customers select the right equipment, answering technical questions, providing installation assistance, and offering knowledgeable support long after the purchase. We're invested in our customers' success, and we genuinely care about their experience.
That commitment is backed by our Limited Lifetime Warranty on GLA CO2 regulators and systems for the original purchaser, covering qualifying defects under our warranty terms.
When you choose GLA, you're investing in more than precision-engineered CO2 equipment. You're choosing two decades of specialized experience, continuous product development, careful quality control, and a business that stands behind what it sells.
Twenty years of experience. A continuing commitment to innovation. A company that stands behind you.
Frequently Asked Questions
What is the benefit of dual-stage pressure regulation?
Dual-stage regulators reduce cylinder pressure in two stages rather than one. This helps maintain a consistent working pressure as cylinder pressure changes, including when the CO2 supply approaches depletion.
Can MINI-DS supply multiple aquariums?
Yes. Choose from one to six manifold outputs. Each outlet has its own precision needle valve and bubble counter for independent CO2 flow adjustment.
Can I add more manifold blocks later?
Yes. Compatible expansion blocks can be added later. Make sure the new blocks match your existing manifold generation, as G2 and G3 components are not interchangeable.
Can each aquarium receive a different amount of CO2?
Yes. All manifold outlets share the same working pressure, but each needle valve allows you to adjust CO2 flow independently for its connected aquarium.
What size aquarium can I use MINI-DS with?
MINI-DS is suitable for a wide range of planted aquarium sizes. CO2 requirements depend on lighting, plant demand, circulation, and diffusion equipment rather than aquarium volume alone.
Does MINI-DS display cylinder pressure?
No. MINI-DS uses a single gauge to display adjustable working pressure rather than the remaining cylinder pressure.
Can MINI-DS be used with an inline atomizer or CO2 reactor?
Yes. MINI-DS supports common planted aquarium CO2 diffusion methods, including ceramic diffusers, external inline atomizers, and compatible reactor systems.
Does MINI-DS include a CO2 cylinder?
No. This listing includes the MINI-DS regulator, selected manifold configuration, integrated components, and GLA OEM tank seal. A compatible cylinder, CO2-resistant tubing, and diffusion equipment are sold separately.
Pre-Sales & Installation Support
GLA provides expert pre-sales assistance, equipment compatibility guidance, and installation support by email and text. Whether you're selecting accessories or setting up your CO2 regulator, we're here to help.
Support & Warranty
GLA Warranty: GLA CO2 regulators include a Limited Lifetime Warranty on qualifying mechanical manufacturing defects and a 2-Year Limited Warranty on qualifying electrical manufacturing defects. Coverage applies to the original purchaser and is non-transferable. For complete systems, regulator warranty coverage does not automatically extend to cylinders, tubing, or other accessories.
Service & Returns: GLA prioritizes repair whenever practical. CO2 regulators and systems are not eligible for voluntary returns. Warranty claims require GLA evaluation and authorization before equipment is returned for service.
For complete coverage, exclusions, service procedures, and domestic and international warranty terms, review our Shipping, Returns & Warranty Policy.
Customer Reviews
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Best regulator. Phenomenal customer service
Can't recommend this regulator and company enough. Was new to the CO2 game. Customer service didn't try to upsell and thoroughly answered all of my questions. This thing is built tough and works like a dream. Basically just set it and forget it
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This is the best budget priced dual stage co2 regulator.
I spent decent amount of money on a crummy Co2art regulator everybody talks about. I don’t think anybody knows what they are talking about after having this up and flowing for 3 weeks. GLA co2 regulators are a major upgrade in comparison. This solenoid and manifold system is leaps and bounds what co2art is putting out for a premium price. I like this expandable manifold and butter smooth needle valve system. I took the whole manifold apart to see if GLA’s claims to valve construction are true. And indeed they are, fully sealed metal on metal valve seats throughout the whole valve. This is what makes it so damn smooth, no plastics and no fluctuations within the orifice map. GLA does it right and that’s what they’re known for.
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Very happy having chose the Mini DS
I was on a slight budget for my co2 system and wanted the Pro DS. But by going this route I was able to use the extra $50 on a drop checker,tubing and a diffuser. Now that it’s set up I’m highly impressed with this system. I like the dual stage aspect and quality of the regulator and solenoid system with the manifold. You can feel the quality in your hands when compared to Fzone. Which reminds me, fair warning on Fzone because my old one didn’t last 3 months. The needle valve knob fell off and the fluctuations were crazy day to day. I have had none of these issues in the 4 weeks I’ve owned this Mini DS. It’s solid everyday and it’s just so pretty, very nice finish to the whole assembly. Thank you GLA for answering all my questions because I asked a ton of questions and they were very patient. Fabulous people at GLA.
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DS-mini regulator and support
Being brand new to co2 I ended up ordering this after reading a lot of reviews, and knowing that with my current schedule and being gone long hours, I didn't want to start out feeling concerned about needing to tweak and constantly monitor and worry about the levels, as I was introducing it to an established aquarium with lots of inhabitants. I had read that GLA is one of the best in the market, and decided to spend a little extra because I was fortunate enough to be able to, and also it seemed worth the ease. Well, being brand new to this with no previous experience when I first set it up it didn't seem to be working right, and I was worried that it was either messed up or I had inadvertently messed something up in the installation process. However, once I was able to get in touch with the GLA support team, David walked me through a real time emailed/text troubleshooting session and was able to pinpoint the issues. Its now set up, on a timer, and I am getting stable co2 readings (at least from the drop checker), and not worried about the fish. The DS Mini also fits really well in the tight corner space I have at the base of the stairs for the tank, and looks about as classy as one of these things could look. I would definitely recommend this regulator and GLA for their awesome customer support!
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So glad I chose this one!
I was having a hard time deciding with all the options. With help from GLA abd a few days of thinking I chose the Mini DS. I wanted dual stage and a compact regulator to go with a 2.5lb cylinder. This was going to sit behind my tank. But! Because it was so nice I decided to put it to the side, looks too good! Functions beautifully is absolutely stable everyday. Love its construction and finish. If you’re on the fence and can’t decide the Mini is the happy middle!
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Compact and loving the modern look.
Very happy with this HLA regulator. It’s very modern and compact but obviously not limited because it’s feeding co2 to my 700g room dividing tank. Very high quality construction and materials. I must say, the customer service is unbelievable and always reliable. They have some text message app service that’s completely mind blowing. Besides all that I can’t say enough about the staff and quality products I’ve received from GLA, I absolutely love this regulator.
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Truly remarkable regulator.
I come from DIY dual stage regulators which are extremely large and heavy for aquarium applications. I’ve had my personal build well into 15 years until last month, not even sure what happened it just wouldn’t hold pressure. I saw a bunch of GLA regulators at Aquashella and was very impressed with this Mini DS piston style regulator. Upon speaking with the rep at the show this is a Matheson design, which is highly coveted for its extreme precision and stability. So much in a compact package had me intrigued so I purchased one and is now installed. Dual stage reliability and a needle valve so smooth and precise like my Swagelock valve. I give big kudos to GLA for thinking of all the important aspects of what we as hobbyist look for. The manifold system they created is the icing on the cake. GLA is a good group of guys doing what they love. Pleasure meeting you all at the show!
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My second GLA regulator and I love it.
I already have the Pro DS but I have a new tank in my basement bar set up now. This is nice because it’s compact and squeezes in next to my existing beer keg co2 system that’s slightly bigger, so it fits perfect. It is one buttery smooth regulator that is easy to get set and forget. High quality from end to end so absolutely no complaints.
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GLA is bomber proof co2 gear.
This thing is awesome and perfect fit for the GLA 2.5lb cylinder. Fits under my nano like a glove. Super nice regulator and very precise in co2 delivery.
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Its sweet!
Love it! Very nice build quality, was up and running in a few minutes. Very modern design that looks sleek in my small cabinet space. Thanks GLA!
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Such a nice regulator guys!
I purchased this to replace my Fzone co2 regulator and its been a blessing. I set it and i dont have to play around with it everyday to get my setting back to normal. I definitely notice a quality difference here, if you have any other brand and you are looking to upgrade this is a huge step up. Dual stage and has the modular solenoid. You will love the needle valve it is so buttery smooth. :)
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Better than ADA co2
In Japan I can get ADA co2 for a reasonable price. However this is roughly the same price and better quality. Im a huge ADA fan, but now I think Im a big GLA fan. They did a good job with this design and the performance is actually much better than ADA. I live in Texas now after spending most my life in Japan but now work here in the US. As somebody who works in oil and gas industry I can confirm this is a top level pice of gas equipment. This is not a toy or cheap product. GLA obviously knows what they are doing and now I understand why so many copy their design. Amano would agree here Im sure of this.
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It’s awesome.
I had an older ADA regulator and was looking to upgrade for similar design and this blew my expectations. I knew GLA was the one to go with but wasn’t sure on model. I chose the mini because I do have limited space and I use a 2.5lb cylinder. I was pumped to know it had GLA’s famous modular solenoid system. But I want to stress the quality and integrity of this unit. It’s on PAR with ADA quality of not a step above. The needle valve or what they call manifold blocks offer a level of adjustment that rivals the lab equipment I use at work. Very precise and effortless. GLA is top tier choice in co2.
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How a co2 regulator should perform!
Retired my Co2art regulator due to nonstop issues. I would like to be clear with this, I dont think people comprehend the low level of quality from Co2Art vs GLA. There is a reason they are so inexpensive and I ubfrotunately paid that price. GLA was kind enough to educate me with many emails back and forth. They even have a plasma cut Co2Art regulator so you can see how its made internally. The difference between a real dual stage (GLA) and Co2Art is astonishing. I felt cheated and Im not sure why people like them. I have a feeling its due to Facebook and Instagram influencers. I know garbage when I see it, and Co2Art does not make a real time dual stage. Its like smoke and mirrors and there is no actual second stage at all. Whereas GLA has two intenral stages of full sized diaphragms. Im not even sure what else you need to know outside of this, but I feel GLA should display this on the website. It would help them and people would see what absolute trash they are buying from cheap junk. While GLA regulators might be more in size, and cost more. Its well worth it 100%.
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Super happy with this regulator.
Color me impressed with this. Much nicer than my ADA regulator. Very easy to use and simple to adjust upon setup. Customer support was amazing!
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Supreme Co2 regulators.
Thank you GLA for your customer service. This regulator has been leaps and bounds my Co2art regulator. High quality, better performance and versatility. You truly can’t ask for more. I like I can use on any cylinder I choose. Modular solenoid system and a needle valve that’s very precise. As well as fully serviceable. Highly recommend GLA products.
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Perfect co2 regulator!
Love this regulator, super nice and great price for high quality. No issues for 4 months its been perfect everyday. Highly recommend!
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The best co2 regulators.
Big upgrade from my Co2art regulator. Should have bought GLA co2 regulator before wasting my tip money on crappy co2art. Lesson learned go with GLA.
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Really nice co2 regulator.
Wasn’t exactly sure what to expect, but boy is this regulator really well made. Its design is nice in that the solenoid easily plugged into my app controlled timer. The finesse of the needle valve is on par with the metering valves I use in the lab I tech at work. Very fine metering. It’s been very precise day to day with no need for interference on my part and to me this says it’s a high quality unit. You can feel it right out of the box, this isn’t a cheap toy. Definitely a real piece of equipment.
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I love this co2 system.
I have not had to make any adjustments to it since I installed it. Its rock steady everyday. A very well made co2 regulator you can feel confident in, works like a champ.
