GLA GRO-2 Aquarium CO2 Regulator


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The GLA GRO-series CO2 regulators lead the way in adaptive CO2 distribution. Our innovative modular manifold, allows the user to add manifold blocks with ease, and expand CO2 supply, independently, to up to 5 aquariums. Our GRO-series regulators can adapt to the expansion of your aquarium system, allowing you to use one regulator for multiple tanks. We make sure that when you invest in our professional CO2 equipment, you invest in a single regulator that can grow with you and last a lifetime.

Industrial grade regulator body

Custom precision GLA needle valve

Pro-class solenoid valve with ‘cool touch’ technology keeps the solenoid cool to the touch during operation

Custom GLA bubble counter with advanced filtration and check valve to protect internal components of regulator

Professional quality pneumatic components

Forged brass and die cast for durability and accurate machining

Dual gauge (tank volume and working pressure)

No end-of-tank dumps

We are confident that our GRO-series GLA CO2 regulators rise above and outlast the competition

Custom built, pressure tested, and leak tested in the USA

Our business is to provide professional quality CO2 regulators and systems to the aquarium hobbyist and to specialized CO2 applications seeking the best CO2 equipment available. We design our CO2 collection with pro-quality pneumatic components to provide an extremely reliable, long-term solution for CO2 distribution. Our CO2 experts build each regulator to order and provide longterm customer care for each regulator shipped out of our distribution center.

Two block manifold directs independent CO2 distribution for up to 2 aquariums.

Installation: CGA-320 threads

Output Pressure Gauge: 0 - 60 PSI

Tank / High Pressure Gauge: 0 - 2000 PSI

Integral PRV: Pressure Relief Valve releases at 51 - 53 PSI

6 foot electrical cord

Includes: one nylon inlet seal and 5 feet of CO2 resistant tubing

Shipping & Lifetime Warranty

Current lead time of 1-3 business days. Orders ship in 1-3 business days.

We do not accept returns on CO2 Regulators.

GLA GRO-series regulators are covered under a LIFETIME warranty.



3 Reviews

Darrin Walraven 15th Aug 2019


This is a fantastic regulator. Commercial grade components and needle valves that actually stay set! Well worth the money for serious CO2 aquariums.

AC Aquatics 30th Jul 2019

Best Regulator I've Ever Used

This Gro2 regulator had been running a 65 and 150gal tank for a month and I have absolutely zero complaints. It is made of all high quality materials so you don't feel like you are going to break the thing just by looking at it. It was very easy to install and just as easy to operate. The needle valve is very well designed and easy to make very fine adjustments. The pride that GLA takes in each one of their products is extremely obvious. Even the packaging was top notch. I will never buy another regulator and I wish I would have bought this one years ago. I highly recommend this regulator and promise you won't be disappointed!!!

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