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About us

Green Leaf Aquariums is a leading planted aquarium brand with 20 years industry expertise in: professional lifetime aquarium CO2 systems, the finest quality aquarium plant fertilizers, thriving aquarium plants & tissue cultures, and specializing in custom hardscape design

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  • Green Leaf Aquariums
  • Green Leaf Aquariums, LLC
    5200 NW 43RD STREET
    SUITE 102-264
    text/SMS:(833) 679-0910
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GLA GRO Aquarium CO2 System

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Pressure Reduction



CO2 Distribution


GLA GRO Planted Aquarium CO2 System

GLA's complete GRO CO2 system provides planted aquarium hobbyists with the essential CO2 equipment they need to grow a thriving aquascape. Our extremely reliable CO2 equipment allows you to focus on what's important, growing and enjoying your planted tank. Our GLA GRO CO2 System includes the following equipment:

  • GLA GRO Aquarium CO2 Regulator
  • 5lb CO2 tank, aluminum CO2 cylinder (ships empty). Configure your system with one or two 5lb cylinder tanks above.
  • Premium plastic check valve
  • Nylon seal
  • Clear CO2 resistant aquarium tubing (10 feet)

Our GLA GRO CO2 Regulator is a compact and sleek, high performance everyday CO2 regulator for single aquarium installation. The GLA GRO CO2 regulator is built with premium components, perfectly tailored to your planted aquarium, for superior CO2 distribution. We design our CO2 regulators in the USA, handcrafted with premium pneumatic components to provide a distinctly reliable and innovative solution for CO2 distribution. Our CO2 engineers build and test each regulator to order and provide lifelong customer support for each and every regulator we build. Our innovative, forward thinking CO2 technology is highly rated in the planted aquarium community. We have pushed the limits of aquarium CO2 technology, setting a new industry standard for CO2 distribution. We are dedicated to providing professional CO2 regulators and aquarium CO2 systems to the planted aquarium hobbyist and to specialized industries seeking the best CO2 equipment available.

  • 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: CGA320
  • Output Pressure: 0 - 70 PSI

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.

24 Reviews Hide Reviews Show Reviews

  • 5
    A complete co2 system for any aquarium size.

    Posted by Phillipe Bastos on 22nd Sep 2021

    Im on my 3rd Gro and all 3 of my tanks are various sizes. What I like the best is you can use this on any cylinder available. To me thats the best in flexibility. It feels very heavy duty and stays set where you set it. Smooth operation through and through.

  • 5
    Aquarium co2 system made easy.

    Posted by Jason Hobgood on 21st Sep 2021

    I wanted a system that was compact and easy to install into my Waterbox aquarium system. I added an inline reactor and its been a complete upgrade for my plants. They are now growing as they should. I would give more stars if they were available.

  • 5
    Aquarium co2 system easy to install.

    Posted by Roy Chapman on 9th Sep 2021

    Being my first co2 system I was a little intimidated. I wanted something easy to install and this was precisely that. I was able to get up and going in about 10 minutes. Its only been a couple months but the plants are happy. I was not doing so well prior to this using diy co2. Excited to try GLA ferts out tomorrow.

  • 5
    Premium aquascaping supplies.

    Posted by Mandy Davis on 6th Sep 2021

    Just took delivery of my new Waterbox aquarium. We needed all the guts to go inside the tank and GLA pulled through with flying colors. They helped us every step of the way and did not mind our millions of questions. Our co2 system is up and running and feeding our beautiful aquarium plants.

  • 5
    Complete aquarium co2 system.

    Posted by Bryson Davis on 29th Aug 2021

    Pumped I ran into GLA online. Service was tremendous and the help was priceless. The system comes with everything you need except the diffuser. So be sure to pick one of appropriate size. I love how they have everything in one button, and all the extra parts you require for your specific needs. My needs were very specific because I wanted a system to work with my 60g rimless cube. The Gro Co2 system fit the bill perfectly. Setup was a breeze with the provided instructions and video. You cant quite ask for more, GLA has you covered. Happy customer for life.

  • 5
    Easy to set up - Helpful support

    Posted by Amber on 1st Aug 2021

    This is my first adventure in to a C02 set up. I emailed before finalizing my purchase to make sure I got everything I needed and Robbie was kind and helpful. It was easier to set up than expected, just took a few minutes. Honestly, the hardest part was finding a place to fill my tank! Ordered it on a Tuesday, I believe, and it arrived by Friday. Excited to add some fun plants to my tank. Thanks again!

  • 5
    Heavy duty co2 system.

    Posted by Michael Waters on 16th Jul 2021

    For a co2 regulator being so compact it sure weighs a lot. Its a dense hunk of metal that goes on buttery smooth. It took me all of 5 minutes to get up and pumping. Adjusting co2 was super easy, Im amazed I was able to do this by myself. Thanks to the instructions and videos they provide its a piece of cake. The GLA co2 tubing was much nicer than anticipated and meshed perfect with the inline co2 reactor. My tank is loving this system!

  • 5
    CO2 regulator

    Posted by Prajwal Chaudhari on 27th May 2021

    Works perfect and easy to install! Thanks

  • 5
    Stellar Co2 system.

    Posted by Dennis Mitchell on 10th May 2021

    This is only my second co2 system so Im not an expert. This kit was leaps and bounds from my co2art regulator, which was more of a lightweight paper weight that could barely even do that as a paper weight. This Gro system comes with an actual industrial grade co2 cylinder,tubing and inline check valve. The only thing you need to add is a co2 diffuser. I opted for GLA's 90mm Atomic diffuser and the pair are absolutely perfect. Its been about 9 months now and I could not be happier.

  • 5
    Best kit for a great price.

    Posted by Edgar Moody on 21st Mar 2021

    I really was not sure what to expect as this is my first co2 system. With no experience I was able to install this system in a matter of minutes. Everything was super easy to follow, they even have some youtube videos explaining things. Customer service was like no other experience Ive had online before. They answered questions at all hours even on a Sunday. What the heck more could you ask for? Thank you GLA for making this so easy.

  • 5
    Love this product

    Posted by Larry Grenier on 4th Mar 2021

    I like the simple yet well-built product. I also appreciated GLAs customer support since I needed a few questions answered as I was setting this up.

  • 5
    GLA Gro system

    Posted by Bernard on 28th Jan 2021

    Quality well built CO2 system.

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