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
-
This is a high quality nano co2 kit.
This is much more than I bargained for. Very heavy duty on everything it feels absolutely solid from top to bottom. The base in itself is an absolute beast. Very thick heavy aluminum and it all looks so cool on my kitchen counters nano tank. If you are in the market for a nano co2 kit this is THE ONE ☝?. I totally love ❤️ it!
-
Undoubtedly the best most heavy duty nano co2 system available.
This wasn’t my first nano kit as my first was a UNS nano kit that turned out to be total crap. For what I paid I expected to get a few years out of it but it lasted 8 months! Angry and upset with customer service trying to obtain a replacement to no avail because they tried blaming me for its faulty behavior. I told UNS to stuff it and got in touch with h with GLA and expressed my frustrations. They assured me I’d have a different experience, so I bought this kit. And holy crap were they right! This kit is straight up business. It’s much more precise, it has dual stage stability, but more important to me was the needle valve was far supirior. It’s smooth like butter and stays put. Woke up checking my bubble rate and it was always right where I left it. A few months in and still rock steady. The cylinder base is a total unit! Heavy duty everything from the regulator, the cylinder stand and every connecting point. Kudos to GLA to not going the way of UNS or Chihiros. Those are big names building shitbox co2 systems. GLA is the total complete opposite spectrum.
-
Best Nano Co2 kit ever!
So much to love about this nano co2 system. Not only is it built super robust, it’s able to fit full sized cylinders when I upgrade in the fall. This is the exact same co2 regulator used on the standard Gro system. It’s super precise and built like a tank!
-
My first co2 kit,I love it!
Sorry my English is not very good. So I buy this system because in my country ADA is king, this recommended by my family in Tokyo since I’m in Florida now at the Orlando Science Center. This aquarium system in my office is the topic of discussion amongst our whole office staff. This co2 system has brought me many friends at work lol. This was very easy to get going right out of the box and supply the aquarium with co2. Very stable and precise, highly recommend!
-
Perfect fit for my nano tank.
This kit is very nice, high grade regulator and incredibly easy to set up. Such a nice addition to my tank. People always ask me about it in complete disbelief of what it does. My tank get proper co2 everyday without a hiccup. Truly a well made product.
-
This is the best nano co2 system you’ll ever buy.
Yep, it’s the best and allow me to tell you why. First off, it uses a large disposable cylinder at 74g. Secondly it incorporates a solenoid for easy on/off timer automation. Third, you can use this on any cylinder size on the planet, even full sized if you wanted. GLA has always set the standard in aquarium co2 and this bad boy looks terrific on my kitchen ADA Mini M nano tank. The quality of this regulator, like a tank. It’s beefy and heavy duty and doesn’t feel dinky at all.
-
Fantastic co2 system and wonderful customer service.
Very happy with GLA and the Gro co2 system. It’s been so much fun working with our first co2 system. It’s a very nice co2 system I have no doubt will last us forever. Nothing feels cheap, everything is high quality.
-
Highest Quality Cartridge System Out There
Title says it all: high quality product w/ excellent customer service
-
This is the nano co2 system.
Using this kit on my desktop tank and its killer! Very compact and so far 1.5 months in on my first cylinder. Its been very precise everyday, I never have to touch anything. High quality gear no doubt.
-
We love GLA products.
Long time fan of GLA but this is my first true nano co2 kit. I must say, this is one amazingly well built co2 system. Very precise and high quality. Much like everything else GLA sells. Cant go wrong with GLA customer service, its uncanny how you can reach them via text any day of the week. 10 out of 10!
