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.
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.
Bought this about 2 years ago and never looked back works great I even added a manifold no issues recommend to anyone who will listen
Dan22nd Aug 2019
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.
Charles2nd Aug 2019
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.
Ken30th Jul 2019
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.
Jared21st Jul 2019
Top notch Reliability
Durable well made regulator that works everytime.
Alex18th May 2019
Just works out of the box
Arrived very well packed. Just works, i am happy
Hector26th Apr 2019
Arrived in protective packaging and in good condition. So far so good with this unit.
Dave20th Apr 2019
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.
Jake Weiss4th Apr 2019
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.
Kandi28th Mar 2019
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!!
Rafael Cornejo 15th Mar 2019
Solid built! Great customer service and awesome communication