Free GLA Substrate Fertilizer Capsules - promotion added to cart with orders $250+


In Stock

GLA GRO Cartridge Aquarium CO2 Kit

20 reviews Write a Review
GLA GRO Cartridge Aquarium CO2 Kit
GLA GRO Cartridge Aquarium CO2 Kit
GLA GRO Cartridge Aquarium CO2 Kit
GLA GRO Cartridge Aquarium CO2 Kit
Current Stock:

Frequently Bought Together:

GLA GRO Cartridge Aquarium CO2 Kit
Inc. Sales Tax (Florida Only)
Ex. Sales Tax (Florida Only)






Pressure Reduction



CO2 Distribution


GLA GRO Cartridge Aquarium CO2 Kit

Introducing the GLA GRO Cartridge CO2 Kit, a sleek and compact solution tailor-made for your nature aquarium. This top-tier CO2 infusion kit is perfect for both single aquarium installations and nano nature aquariums. Constructed with high-grade materials, it promises unparalleled CO2 distribution to make your underwater garden flourish like never before.

Designed with precision in the USA, our regulators stand out from the competition, featuring cutting-edge pneumatic components. This guarantees not only reliable CO2 distribution but a level of quality that is second to none. Every single regulator undergoes rigorous testing by our dedicated team of engineers. Our commitment doesn't end there – we also offer lifelong customer service to make sure you are always satisfied.

Choose the GLA GRO Cartridge Kit for your nano nature aquarium and watch your aquascape grow and thrive. We don't just provide professional CO2 regulators; we build relationships with planted aquarium enthusiasts and specialized industries that demand nothing but the best. With our cartridge-based solution, consistent and effective CO2 distribution is not just a promise; it's a guarantee. Experience the difference with our CO2 equipment, and let your underwater paradise thrive.

  • Sleek and Compact Design: Tailor-made for both single installations and nano nature aquariums, with a streamlined appearance.
  • Superior CO2 Distribution: Built with high-grade materials for unmatched CO2 distribution, ensuring your planted tank flourishes.
  • Reliable and Tested Quality: Rigorous testing by dedicated engineers guarantees reliability and second-to-none quality, with lifelong customer service.
  • Premium aluminum regulator body
  • Micro precision needle valve rotates 360 degrees
  • Innovative, optimal performance 'cool touch' solenoid valve
  • Premium GLA bubble counter with check valve to protect your equipment
  • Multistage micron filtration inlet and outlet
  • Laser precision metal-on-metal valve seat
  • Integrated pressure relief valve (PRV)
  • Premium quality pneumatic components
  • Custom designed, pressure tested, and leak tested in the USA
  • Primed for your next aquascape
  • Handcrafted by our expert CO2 engineers for everyday life, so you can enjoy your planted aquarium without worry.
  • We are dedicated to providing unparalleled CO2 technology and setting the industry standard of CO2 distribution excellence.
  • We are confident that our GLA CO2 regulators rise above and outlast the competition.


  • Installation: Disposable CO2 Cartridge
  • Output Pressure: 0 - 70 PSI
  • Includes: 74-gram disposable CO2 cartridge and heavy-duty black plastic cartridge base

Our Standards

Handcrafted Excellence
✓ exceptional care and pride in what we build
✓ bringing our passion to life

Elite Performance
✓ for your next aquascape
✓ and for every aquascape after that

Built to Last
✓ your everyday super CO2 regulator
✓ a regulator that is truly unmistakable

Our Guarantees

Installation Support
✓ dedicated expert installation support
✓ we are here to help you get started

Lifetime Warranty
✓ rock solid lifetime warranty
✓ your peace of mind guaranteed

Lifetime Support
✓ we back what we build
✓ we will be here to help you into the future



Limited Lifetime Warranty: GLA GRO CO2 Regulators are covered under a limited lifetime non-transferrable warranty against defects in materials and workmanship, when used in strict compliance with Green Leaf Aquariums, LLC (GLA) recommended usages, while the goods are under the ownership and control of the original purchaser. The lifetime warranty does not guarantee that the product will perform for the lifetime of the buyer. The actual time that the product can be expected to perform is determined by the highest standard of working time for products of its kind and per the buyers usage and application. If the product is discontinued, the warranty will remain a limited period longer, and then claims will be warranted with a similar product or credit, as determined by GLA, and appropriate to the product's age and condition at time of claim. GLA does not assume any responsibility or make any warranties with respect to items which are modified, altered, abused, misused, damaged, or serviced by unauthorized personnel. The warranty is void if at any time a wrench is used on the regulator, for any purpose, other than to tighten the regulator to the CO2 cylinder. It is important to read instruction guide provided when installing product, for damage due to improper installation is not covered under the warranty, although GLA will happily provide support and service for the product at a determined repair cost.

Customer Reviews

20 reviews

  • 5

    GRO nano CO2 kit

    It is a compact unit. The needle valve is very good to control bubble rate. Will definitely recommend this unit.

  • 5

    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?

  • 5


    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.

  • 5

    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

  • 5

    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!

  • 5

    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.

  • 5

    Love it!

    Very happy, love that I can use this on a bigger tank in the future. GLA was superb!

  • 5

    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.

  • 5

    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.

  • 5

    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.

  • 5

    Sweet nano co2 kit.

    This kits is pretty cool, no complaints other than you ned to buy a diffuser but I understand. Its simple to set up in minutes. Whats cool is you can use this same kit on larger cylinders in the future. All they said was to buy the GLA adapter and your ok to go. Very effective and my bubble counter is always steady. I use mineral oil in my bubble counter to ovoid having to refill often.

  • 5

    Very cool little kit, that does so much more.

    I could not for the life of me find a place to fill my 5lb in my new town. Luckily I did find a place that was advertising but they are not yet open for another 4 months on the new place. GLA assured me this would work later on a full sized provided I get the extra adapter. This bad boy works terrific and we are super happy.

  • 5

    Its perfect for my dorm room!

    I dont think Im technically allowed to have this in my dorm room first year of collage. Whats great about this is it hides super easily. Full on pressurized co2 into a small compact package. This was perfect!

  • 5

    Pro grade mini co2 system.

    Much nicer than my Tropica mini co2 system. This one has a complete solenoid system built into the body. You can plug into any outlet of basic timer, I opted for the Bluetooth timer for basic on/off automation. So neat, I can control my co2 from my phone in terms of being on/off. You will need some tubing and a diffuser. They dont include one but thats understandable as there are so many sizes. It sits on my kitchen counter and I get to watch it all day!

  • 5

    Gro kit

    I am still mind blown by the quality of this little regulator, and for the money you get all the goodies to make it a kit too. The solenoid is really nice for keeping that hands free operation once dialed in as well. The bubble counter and needle valve are by far the smoothest I've felt. So add on a diffuser and check valve of choice and your good to go!

  • 5

    Excellent Nano co2 kit.

    I love this nano co2 system. Its been perfect for my desktop. I added the acrylic diffuser and soft tubing to the kit and its been rock solid. I learned later that this regulator also works with paintball and standard 5lb co2 cylinders. 3 in 1!

  • 5

    Excellent system for nano tank

    Prior to purchasing this system I was using a basic starter kit (Fluval 45g kit) for my 3 gallon. This system, especially due to the solenoid and separate valves has allowed for much better precision and daily fiddling to get the bubble count right. The flow is consistent and it's a set of and forget it system which has made things so much easier. My plants are loving it.

  • 5

    Great Service & Great Products!

    Sent an inquiry thru the website abt this & got an immediate response. Been out of the hobby awhile & my q?s weren’t dismissed. Thank u. As for the CO2 system— the value is hard to beat, the solenoid alone pays for Itself. The whole unit works wonderfully & there r very detailed instructions included. All you need is CO2 Tubing, a Check Valve & a Diffuser & you’re all set! I bought the replacement CO2 cartridges but an adapter they sell here can make it fit onto larger tanks /if preferred.

  • 5

    Absolutely perfect

    You will not find a better nano co2 kit on the planet. This is the best Nano co2 kit I have found anywhere. Not even ADA kit can compare to this in price,form and function. When this arrived I was truly blown away at its build quality. Its heavy duty and means business. The guys at GLA have been doing co2 systems since 2006, they know what they are doing. This nano kit comes totally complete and has been working flawless in my 5.5g nano tank for a few months now without issue. The only thing I have to do is refill the bubble counter. Which by the way, you have the option to run an inline bubble counter. You dont have to use the supplied co2 bubble counter. You can attach tubing directly to the needle valve, it comes ready to go. Look no further, this is THE nano co2 kit.

  • 5

    Co2 cartridge regulator

    Dipping my toes into trying CO2 for planted tank, and ordered the co2 cartridge set-up to try out in a nano. Regulator solid, shiny :) and easy to adjust, and holds its count even at quite low rate. Arrived quickly, well packaged, with good instructions. All good with me, coming back in a few months for my next regulator investment.

Customers Also Viewed

Aluminum Inline CO2 Diffuser

Aluminum Inline CO2 Diffuser

Our aluminum CO2 diffuser is designed to be installed outside of the aquarium, inline within the outflow tubing of your canister filter, either below the aquarium or mounted to the aquarium glass...

Join the List