Description
GLA GRO Cartridge CO2 Kit
The GLA GRO Cartridge CO2 Kit is a compact, all-in-one solution designed for nano and small planted aquariums. Using disposable CO2 cartridges, this system provides a simple and convenient way to introduce CO2 without the need for a full-size cylinder.
Ideal for smaller setups or users looking for a compact, low-profile CO2 solution, this kit delivers reliable CO2 control in a space-efficient design. Built with precision components found in our full-size regulators, it offers consistent performance in a simplified format.
Who This Is For
- Nano and small aquarium setups
- Beginners looking for a simple CO2 solution
- Users who prefer a compact system without a large CO2 cylinder
For larger aquariums or long-term use, we recommend a full-size CO2 system with a refillable cylinder.
What’s Included
- GLA GRO Cartridge CO2 Regulator with integrated solenoid and bubble counter with check valve
- 74g disposable CO2 cartridge
- Heavy-duty solid aluminum cartridge base
Key Features
- Compact CO2 Solution: No large tank required
- Cartridge-Based System: Uses disposable CO2 cartridges for convenience
- Precision Needle Valve: Fine-tune CO2 output with stable control
- Integrated Solenoid: Automates CO2 on/off with a timer or controller
- Compact Footprint: Ideal for nano tanks and tight spaces
Performance & Design
- Premium aluminum regulator body with durable internal components
- Laser precision metal-on-metal valve seat for consistent regulation
- Multi-stage micron filtration for clean CO2 delivery
- Pressure tested and leak checked prior to shipment
- Engineered to meet GLA performance standards and tested to ensure consistent, dependable operation.
Important Notes
- Designed for small aquariums and nano setups
- CO2 cartridges are disposable and must be replaced when empty
- Cartridge lifespan will vary based on aquarium size and CO2 usage
- A diffuser or reactor is required for in-tank CO2 delivery (sold separately)
Specifications
- Installation: Disposable CO2 cartridge (74g)
- Pressure Reduction: Single Stage
- Output Pressure Range: 0–70 PSI
- CO2 Distribution: Single Aquarium
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
How long does a cartridge last?
Cartridge lifespan depends on aquarium size and CO2 usage, but this system is best suited for nano and smaller aquariums where consumption is lower.
Can this be used on large tanks?
This system is designed for nano and small aquariums. For larger tanks, a full-size CO2 system is recommended.
Do I need anything else?
Yes. A diffuser or reactor is required to introduce CO2 into the aquarium.
Is this suitable for beginners?
Yes. This is one of the simplest ways to get started with CO2 in a planted aquarium.
CO2 Cartridge Refills
Replacement 74g CO2 cartridges are available and easy to install, allowing you to quickly get your system back up and running.
View 74g CO2 Cartridge Refills →
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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GRO nano CO2 kit
It is a compact unit. The needle valve is very good to control bubble rate. Will definitely recommend this unit.
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Great for All Sizes of Planted Tanks
Avery well made product, easy to install and use, the needle valve can be adjusted to very low levels and keep the co2 injection very stable. Perfect for planted nano tanks. In addition to all this they included a cga320 adapter to connect it to a larger co2 tank (for free) and use it in bigger planted tanks…. what else could you ask for?
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Awesome!
Loving this nano kit. Next year I will get the adapter to use on a bigger tank and cylinder. Very slick and extremely well made.
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Perfect mini regulator for micro tanks
I have these on my 3 and 9 gallon tanks and they're the perfect kit for their size
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First CO2 Regulator
This is my first CO2 system after years in the hobby, and it was a great little all-in-one kit. Everything I needed to get started, minus the diffuser, which is more tank-specific. I really recommend giving it a shot!
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A+++ Co2 kit!
Very nice well made co2 regulator. I love that when Im ready this joker fits a full sized cylinder. Its super smooth operation has me very satisfied.
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Love it!
Very happy, love that I can use this on a bigger tank in the future. GLA was superb!
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Perfect for any size aquarium.
Im loving this nano co2 system from GLA. The entire installation process require zero tools. Co2 was up and running in a few minutes. Everything has been purring like a kitten for weeks now on one bottle so far. I was expecting to change by now. This is on a 10G nano tank so my bubble rate is relatively low. Speaking of which, the needle valve is like that of my Ideal metering valve on my older GLA regulator from 13 years ago thats also still going strong. If you dont know what metering valves are, these are very expensive needle valve that typically cost more than this entire system itself. The needle valve is the black tubing knob that the bubble counter connects to, and its just amazing for its size. I emailed and spoke to GLA. What they did was very clever. Because they work with needle valves for decades, they knew what had to be done here. They copied the flow curve of an Ideal metering valve. This compact small needle valve has a flow coefficient like nothing in its class. A normal metering valve is about 4-5" long. GLA achieved this in 1" of length. This is amazing and even better they did it with all metal internals. This is a very nice kit for what you are paying and you get GLA support. You dont get any better than that.
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Very cool co2 system from GLA.
Really cool kit GLA put together. I do not have room in my apartment yet but in a few months I will be going to a 5lb cylinder. This regulator only requires an adapter to fit full sized cylinders. Its the same exact Gro regulator you see on the systems page. Its a very sturdy build with very well made components through and through. I like GLA's warranty and the help they have provided. These guys are great.
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GLA nano kit is very nicely made.
Very happy, espcerailly the price. Once you get it at home you will see its well worth it. These days I would expect to pay much more but this little system has been terrific. Ive used 3 cylinders in the last 7 months! I did not to get that much use out of one cylinder. Whats really cool is how low you can adjust the bubble rate. You can get it so low its not even normal to see low bubble rates that low. Im not even sure who would need that but cool to know I have that ability, because its a super fine tuned needle valve.
