Description
GLA PRO-DS-6 Dual-Stage CO2 Regulator (6-Block Modular Manifold)
Dual-stage CO2 control for six aquariums, fully configured.
The GLA PRO-DS-6 Aquarium CO2 Regulator combines dual-stage pressure regulation, precise CO2 adjustment, and automatic operation in a full-size design. Its six-block modular manifold allows you to supply six planted aquariums from a single regulator and CO2 cylinder.
Each manifold outlet includes its own precision needle valve and bubble counter, allowing CO2 flow to be adjusted independently for each aquarium. Dual pressure gauges provide separate monitoring of cylinder pressure and adjustable working pressure.
PRO-DS-6 includes the complete six-outlet manifold, representing the maximum standard configuration in the PRO-DS lineup. Every GLA PRO-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
- Included Manifold: Six independently adjustable CO2 outlets
- CO2 Adjustment: Precision needle valve for each outlet
- Flow Monitoring: Bubble counter for each outlet
- Automation: Integrated electric solenoid
- Pressure Monitoring: Separate cylinder-pressure and working-pressure gauges
- Manifold Capacity: Complete six-outlet configuration
Best For
- Six planted aquariums sharing one CO2 cylinder
- Aquarists who want independent CO2 adjustment for each aquarium
- Planted aquariums with different sizes or CO2 requirements
- Full-size dual-stage CO2 installations
- Multi-aquarium systems requiring six CO2 outlets
- Aquarists who want separate cylinder-pressure and working-pressure gauges
- Automated daily CO2 operation with a timer or compatible controller
Why Choose the GLA PRO-DS-6?
PRO-DS-6 combines dual-stage pressure regulation, six independently adjustable CO2 outlets, and dual-gauge monitoring in one regulator. The complete six-block manifold is included, with no additional expansion blocks required.
- Dual-Stage Pressure Regulation: Reduces cylinder pressure in two stages to help maintain consistent working pressure as cylinder pressure changes, including near depletion.
- Six Independent CO2 Outlets: Supply six planted aquariums from one regulator and CO2 cylinder, with separate flow adjustment for each aquarium.
- Precise CO2 Adjustment: Each manifold block includes its own precision needle valve, allowing you to fine-tune CO2 delivery for different aquarium requirements.
- Separate Pressure Gauges: One gauge displays cylinder pressure, while the other displays the regulator's adjusted working pressure. Both can be monitored independently.
- Complete Six-Block Manifold: All six manifold outputs are included, providing the maximum standard CO2 distribution capacity of the PRO-DS platform.
- Individual Bubble Counters: Each manifold outlet includes a bubble counter that provides a visual reference when adjusting CO2 flow to its connected aquarium.
- Automatic CO2 Control: The integrated electric solenoid allows CO2 injection to turn on and off automatically using a timer or compatible controller.
- Integrated Protection: A pressure relief valve provides additional protection, while multi-stage stainless steel micron filtration helps protect internal regulator components from contamination.
- Durable Construction: A precision metal-on-metal valve seat and quality pneumatic components are designed for dependable long-term operation.
- USA Inspection & Testing: Every PRO-DS regulator is individually inspected, pressure tested, and leak checked in the USA before shipment.
Complete Six-Block Modular Manifold
PRO-DS-6 includes six modular manifold blocks, each with its own precision needle valve and integrated bubble counter. This provides six independently adjustable CO2 outlets from a single regulator and cylinder.
All six aquariums share the regulator's working pressure and automatic on/off schedule, but CO2 flow can be adjusted separately for each aquarium.
Full Manifold Capacity: PRO-DS-6 includes the maximum standard six-outlet configuration. Please email GLA to inquire about manifold capacity beyond 6 outlets.
View GLA Modular Manifold Blocks
What's Included
- GLA PRO-DS-6 Dual-Stage CO2 Regulator
- Six-block modular manifold
- Six precision adjustable needle valves
- Six integrated bubble counters
- Integrated electric solenoid
- Cylinder-pressure gauge
- 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 for each aquarium are required to complete your CO2 installations. These items are sold separately.
Need a cylinder too? Explore our GLA PRO-DS Complete CO2 System, which combines the PRO-DS regulator with a refillable aluminum CO2 cylinder and CO2-resistant tubing. Select the six-block manifold configuration when ordering.
Technical Specifications
- Model: GLA PRO-DS-6 Dual-Stage CO2 Regulator
- Pressure Regulation: Dual-stage
- Cylinder Connection: CGA-320, standard USA CO2 cylinders
- Adjustable Working Pressure: 0–140 PSI
- Pressure Monitoring: Separate cylinder-pressure and working-pressure gauges
- Included Manifold: Six modular manifold blocks
- Standard CO2 Distribution: Six aquariums
- Manifold Capacity: Maximum standard six-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: Laser-precision metal-on-metal
- Filtration: Multi-stage stainless steel micron filtration
- 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 consistent working pressure as cylinder pressure changes, including when the CO2 supply approaches depletion.
How many aquariums can PRO-DS-6 supply?
PRO-DS-6 includes six manifold outlets for six aquariums, each with its own precision needle valve and bubble counter for independent CO2 flow adjustment.
Can each aquarium receive a different amount of CO2?
Yes. Each manifold outlet includes its own precision needle valve, allowing you to adjust CO2 flow independently for each aquarium. All six outlets share the same working pressure.
Can the six aquariums have different CO2 schedules?
The integrated solenoid switches all six manifold outlets on and off together. CO2 flow can be adjusted independently, but all aquariums share the same automatic operating schedule.
Can I use different CO2 diffusers on each aquarium?
Yes. Each outlet may supply a compatible ceramic diffuser, inline atomizer, or CO2 reactor. The regulator's working pressure is shared, so all six diffusion devices must be compatible with the selected pressure.
What do the two pressure gauges display?
One gauge displays CO2 cylinder pressure, while the second displays the regulator's adjustable working pressure. The cylinder-pressure gauge does not provide a precise measurement of remaining CO2.
Can PRO-DS-6 be expanded beyond six outlets?
PRO-DS-6 includes the maximum standard six-outlet manifold configuration. Additional outlet expansion beyond six is not part of the standard PRO-DS configuration.
Can individual manifold blocks be replaced?
Compatible manifold blocks may be replaced or serviced as needed. Replacement blocks must match your existing manifold generation, as G2 and G3 components are not interchangeable.
What size aquariums can I use PRO-DS-6 with?
PRO-DS-6 can supply planted aquariums of various sizes. CO2 requirements depend on lighting, plant demand, circulation, and diffusion equipment rather than aquarium volume alone.
Does PRO-DS-6 include a CO2 cylinder?
No. This listing includes the PRO-DS-6 regulator, six manifold blocks, 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
-
GLA is the best in the game.
I’d never consider buying anything less than GLA when it comes to a co2 system. I’ve got an older gen that’s 13 years old still working like it was brand new. With my new house and new studio I decided to treat myself and go big. This regulator is the real deal and you’ll know it right away. The quality is evident and execution upon setup is brilliantly designed. It flows co2 like butter to all my diffusers. Flawless design and quality every time from GLA.
-
This is one amazing regulator.
I needed two of these to operate my grow out farm. I try my best at aquascaping but I find I do more dutch style than anything with farming in between. These regulators can feed all my tanks effortlessly. I use inline diffusers for diffusion so maintenance is minimal. Extremely pleased with GLA products.
-
Pro level co2 regulator.
I ordered this to help feed co2 into 6 farm tanks I have running. This thing is an absolute beast. What I liked most was the quality of the finish of the entire assembly. I know cheap crap when Im holding it, you do not get that feeling with this. Extremely well made through and through. Set up was super easy, about 5 minutes. What took me the longest was mapping out the tubing runs. Solid reliable dual stage co2 regulator. Its even built like a real dual stage. Not like what you see from the rest of the companies. A+ all around GLA.
