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 ideal for aquarists who want a straightforward, effective CO2 solution without the added complexity of dual-stage or multi-aquarium configurations.
Designed for simplicity and consistency, the GLA GRO delivers stable CO2 output for single aquarium setups, making it a reliable choice for aquarists seeking straightforward performance without unnecessary complexity.
Who This Is For
- Aquarists setting up their first CO2 system
- Single aquarium setups (no expansion needed)
- Users looking for a compact, straightforward regulator
If you plan to run multiple aquariums, the GLA GRO regulator can be expanded using a CO2 splitter. For maximum pressure stability and long-term performance—especially as your CO2 cylinder empties—consider upgrading to a dual-stage regulator 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.
Do I need a solenoid?
No additional solenoid is required. The regulator includes an integrated solenoid for automated CO2 control.
Is this suitable for beginners?
Yes. The GRO is an excellent entry point into CO2 systems due to its simple, reliable design.
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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A piece of mind quality
The regulator is compact, feels of solid quality and it was very easy to install. The Needle valve is precise and consistent.
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This thing is awesome!
Exactly what I needed. Compact and built like a steel brick. Zero end of tank dumps with a very precise working needle valve that keeps the bubble rate steady every day all the way to the last drop of co2. Absolutely love it.
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GLA GRO Aquarium CO2 Regulator
For over a decade, GLA has been our go-to company for their entire line of CO2 regulators. They are beautifully crafted, well-built, and have been very reliable through all the years. Infinity Aquarium Design of Los Angeles
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This Gro regulator is an absolute unit.
Love the compact build and heavy duty feel to this regulator. Almost like it’s filled with iron lol. It’s heavy! Never have to fool around with settings either, I just leave it and it works. It helps to follow instructions and the best part is GLA’s customer service, it’s unbeatable especially that text service they offer, just amazing company!
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Premium Co2 equipment!
Per the advisement of my local club I purchased this regulator to replace my Fzone. What a gem, better quality and reliability I can trust day to day. No kore fiddling with adjustments thank god, it started feeling like a daily chore with Fzone. I’m finally free from that cheap prison lol
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What a great buy.
Searched for a few weeks and kept coming back to GLA. All the Facebook groups,Reddit and Locsl clubs all recommend GLA for quality and longevity. The warranty is amazing so I had nothing to lose. I’ve had this operating on a Bluetooth timer that has an app on my phone. Also has a cool water leak detector that super handy. Yo-Link is the brand of timer I use and I highly recommend them. This regulator is super solid and not at all wimpy. The whole thing from top to bottom is built well and is steady everyday. I’ve not done anything but shine it up from time to time to keep it looking nice, I love it.
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GLA is top quality and very friendly staff.
Pleased with this regulator. Replaced my Co2Art regulator that didn’t last 9 months. This was a noticeable difference out of the box. Very happy with GLA
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Thank you GLA and team!
My plants are absolutely flourishing. I’ve had this regulator for 8 months and today was my first cylinder swap. I must say, during the initial first 8 months I never had to make any adjustments as the tank matured. I set the timer for an 8hr photoperiod and it’s been rock steady. Until the very last few days I noticed my drop checker was blue vs the regular green, I’d ran out of co2 and didn’t notice. Refilled today and was back up and running in a few hours. It’s been absolutely wonderful. I’ve started selling my clippings on Facebook and in due time my hobby is going to pay for itself! Loving GLA products across the board.
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Very nice quality
Very high quality for such a bargain price. Upgrade for sure from Fzone. Really enjoying the super butter smooth needle valve bubble adjustments. So much better than Fzone.
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basic Gla mini Gro
works as it should. seams well built and time will tell how good this reg.is.
