Description
GLA GRO Planted Aquarium CO2 Regulator
The GLA GRO CO2 Regulator is a compact, precision-built single stage regulator designed for reliable CO2 delivery in single aquarium setups. Built with high-quality pneumatic components and assembled to strict standards, it provides consistent output and dependable performance for planted aquariums.
Positioned as a streamlined option within the GLA regulator lineup, the GRO is designed for aquarists seeking reliable, consistent CO2 performance in a compact and straightforward configuration.
Designed for consistency and reliable long-term operation, the GLA GRO delivers stable CO2 performance for planted aquariums of many sizes when configured appropriately.
Who This Is For
- Aquarists seeking a streamlined and reliable CO2 regulator
- Single aquarium planted tank setups
- Hobbyists prioritizing compact installation and simplicity
- Planted aquarium systems not requiring modular multi-aquarium expansion
Aquarists seeking additional modular expandability or enhanced pressure stability refinement as cylinder pressure changes may also consider dual-stage systems such as the GLA PRO-DS or DS-MINI.
Key Features
- Single Stage Design: Reliable CO2 delivery for single aquarium setups
- Precision Needle Valve: Micro-adjustment for accurate and stable CO2 dosing
- Integrated Solenoid: Automates CO2 on/off with a timer or controller
- Premium Bubble Counter: Includes integrated check valve to protect internal components
- Pressure Relief Valve (PRV): Built-in safety feature for system protection
- Compact Footprint: Clean installation with minimal space requirements
- Tested in the USA: Pressure tested and leak checked prior to shipment
Performance & Design
- Laser precision metal-on-metal valve seat for consistent regulation
- Multi-stage micron filtration at inlet and outlet
- 360° adjustable needle valve for flexible installation
- Durable aluminum regulator body with premium pneumatic components
- Engineered to meet GLA performance standards and tested to ensure consistent, dependable operation.
Specifications
- Installation: CGA-320 (USA standard CO2 cylinders)
- Pressure Reduction: Single Stage
- Output Pressure Range: 0–70 PSI
- CO2 Distribution: Single Aquarium
What’s Included
- GLA GRO CO2 Regulator with integrated solenoid and bubble counter with check valve
- GLA OEM CO2 tank seal
The GLA GRO CO2 Regulator is designed for aquarists who value reliability, simplicity, and clean installation. It delivers consistent CO2 control for planted aquariums without unnecessary complexity. Simple, reliable, and built to perform—everything you need for a clean and effective CO2 setup.
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
Is this a dual-stage regulator?
No. The GLA GRO is a single-stage regulator designed for simplicity and reliability in single aquarium setups.
Can this run multiple aquariums?
Yes, with the addition of a GLA GRO CO2 splitter. However, for independent control and maximum stability, a dual-stage regulator system is recommended.
Will this work with standard CO2 tanks?
Yes. This model uses a CGA-320 connection, which is standard for CO2 cylinders in the USA.
Is this suitable for beginners?
Yes. The GLA GRO is commonly chosen by both beginner and experienced planted aquarium hobbyists seeking a compact, reliable, and straightforward CO2 regulator system.
Optional Add-On: CO2 Splitter (Multi-Tank Expansion)
Expand your GLA GRO CO2 System to run multiple aquariums with the GLA CO2 Splitter. Designed specifically for compatibility with GLA GRO regulators, this add-on allows you to distribute CO2 to additional tanks from a single regulator.
Each outlet includes its own precision needle valve, allowing independent control of CO2 flow to each aquarium for optimal tuning and plant growth.
- Expands CO2 distribution to multiple aquariums
- Independent needle valves for precise control per tank
- Easy installation directly onto GLA GRO regulators
- Designed for seamless compatibility with GLA GRO systems
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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Brilliant and easy co2 system.
So simple and easy to use! Exactly what I wanted.
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Precise and quality to boot.
I really like these regulators. Very well made and the needle valve is just fantastic. Now I’m eying the new Mini-DS
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Regulator
Good directions Very accurate easy control
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Buy with confidence because this bay rocks!
Compact,heavy duty and precision flow. I love this GLA co2 regulator. I decided to bypass the bubble counter because I simply did not need it. It comes ready for a factory tubing fit directly to the needle valve. I secured it via the bubble counter tubing grip nut for a factory fit. Its not even more compact and in my opinion sleek. Working with GLA was an absolute breath of fresh air.
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Love it!
As always, fast delivery and terrific products from GLA. A+
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Beautiful well made co2 regulator.
My first co2 regulator go me lol! Seriously though, its been amazing. I wasn't sure of my tank warranted the co2 but my plants are happier and I can now grow a much more wide variety of plants. I have never installed one of these so I was a bit nervous at first. I even had GLA on text for stand by, it was like no other customer support I have ever experienced. Thankfully I did not need any help. I was caught off guard on how easy it was, I even questioned myself several times. It was a tremendous growing experience for me. As a beginner I can assure you this system is flawless. It came with everything I needed but most admirably was the customer support.
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Stellar co2 equipment from GLA.
Long time veteran customer of GLA since 2006. This compact GLA regulator is extremely well made and super easy to use. Its compact fit looks and fits great in my minimalistic cabinet. Bubble rate is rock steady and effortless to tune. Came with a wrench and sweet decals!
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Wonderful compact co2 regulator.
Pleasantly surprised with this GLA co2 regulator. Great packaging and speedy delivery. Came with necessary tolls for installation,manual and stickers. Upon opening you will notice off the bat its weight, nice and heavy. It took me a few short minutes ot get it installed and I was off and pumping. Super easy installation and its purring like a kitten 7 months later. Bonus, this model will fit all cylinder types! Whats not to love about this?
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My first co2 system success!
I finally caved and went with co2. Upon advisement of my colleagues to contact GLA for a complete system. I sent several emails for 3 days to make sure I was getting exactly what I needed. They were patient and very helpful. They were supportive even during the journey of my aquascape. They were with me every step of the way. I have never recieved this level of service for anything. Not even buying my own home. Cheers to GLA and team, you guys are wonderful and this co2 regulator makes my aquascape glow with brilliance.
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Quality
Great regulator, I would have gone dual stage if I purchased my first regulator again. Only thing I did not like was that the instructions did not say the solenoid could rotate so I was confused installing it because the tank was in the way. quality durable feel and smooth knob operation and co2 production.
