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 designed for aquarists seeking reliable, consistent CO2 performance in a compact and straightforward configuration.
Designed for consistency and reliable long-term operation, the GLA GRO delivers stable CO2 performance for planted aquariums of many sizes when configured appropriately.
Who This Is For
- Aquarists seeking a streamlined and reliable CO2 regulator
- Single aquarium planted tank setups
- Hobbyists prioritizing compact installation and simplicity
- Planted aquarium systems not requiring modular multi-aquarium expansion
Aquarists seeking additional modular expandability or enhanced pressure stability refinement as cylinder pressure changes may also consider dual-stage systems 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.
Is this suitable for beginners?
Yes. The GLA GRO is commonly chosen by both beginner and experienced planted aquarium hobbyists seeking a compact, reliable, and straightforward CO2 regulator system.
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
-
Look no Further
I spent a lot of time trying to figure out how I was going to put my CO2 system together for my first planted tank. The regulator seemed to be the most difficult thing to find or put together yourself. The easier ones to find that were directed at aquarists all had a reputation of breaking or not working reliably. GLA's regulator looks like it's composed of quality materials and it has been working perfectly. Just spend the money and don't waste your time trying to find a budget regulator. GLA responded quickly to a question I had regarding the product but... I haven't heard back from them on two other emails related to plants. I'll keep shopping here because they have a great site and ship quickly. It would be nice to see more detail about the plants they offer as I have to search elsewhere for info on each one.
-
Solid regular
Wow what a step up from the $60.00 China regulator from amazon. I can’t believe I wasted so much time readjusting my old unit day after day. The bubble adjustment on the GLA GRO1 is consistent, it’s been in operation for a couple weeks now.
-
Very Well Built - Solid and Highly Accurate
I purchased the GLA GRO-1 and could not be happier. After researching a number of other units online I became concerned about where I might find a quality regulator for my new aquarium. Until I found this one. It has a large bubble counter, easy to read gauges and the needle valve is crazy accurate. The unit works great on my IOT timer however I did initially have a slight CO2 leak between the tank and the regulator. In the end it was simply a tightening issue however I wasn't sure how tight to make the connection against the nylon washer. Perhaps buying the permaseal adapter would have been a good idea however I didn't realize such an adapter was possible/available.
-
Top notch Reliability
Durable well made regulator that works everytime.
-
Just works out of the box
Arrived very well packed. Just works, i am happy
-
Great Regulator
Arrived in protective packaging and in good condition. So far so good with this unit.
-
Absolutely perfect
There are two things that are fantastic about this regulator. First, it is like a scientific instrument. It is made from brass and really high quality fittings that have been assembled by a human and everything is perfect right out of the box. The quality is really remarkable all around. gauges are super easy to read, bubble counter and airline input are very high quality. The second thing which may seem trivial unless you are an expert already at CO2 is the instructions. They are simple and perfect. I never could have figured out the Chinese version I almost bought. there are a lot of steps to doing it right and doing it in a way that does not fry your solenoid or low pressure valve.The instructions are almost worth the price of admission. Love a well made tool.
-
Quality Regulator
Had it running for around 10 days now. Easy to setup, all in one unit. processing was a bit slower than I would have like but fast shipping and quality packaging. I will be expanding upon this regulator in the future.
-
Highly satisfied customer
It’s my first time trying co2. I bought the gla gro-1. It was easy to set up and it works great!!
-
Great product
Solid built! Great customer service and awesome communication
