Description
GLA PRO-CO2 Reactor 5L – Maximum CO2 Saturation for Nature Aquariums / Planted Tanks
Our GLA PRO-CO2 Reactor is engineered for unmatched CO2 dissolution, delivering maximum efficiency with zero waste. Designed for serious aquascapers, this reactor ensures stable, high-level CO2 saturation, optimizing plant health and growth in high-tech nature aquariums.
- 5L High-Capacity Chamber – Handles high-flow filtration while maintaining consistent CO2 saturation.
- Precision-Designed in the USA – Built from professional-grade acrylic (19" tall × 6" diameter) for durability and performance.
- Whirlpool Diffusion System – Creates a high-flow vortex, ensuring complete CO2 absorption before water returns to the aquarium.
- Universal Fit – Compatible with 12/16mm, 16/22mm, and 20/25mm tubing, seamlessly integrating with canister filters and external pumps.
Installation & Functionality
1️⃣ Connect inline with your canister filter’s output.
2️⃣ Attach CO2 tubing using the easy Speedfit connection—a secure, tool-free fitting with a built-in on/off valve for precise CO2 adjustment.
3️⃣ Let the vortex effect optimize CO2 dissolution, ensuring full saturation before water returns to the tank.
4️⃣ Fine-tune CO2 levels to meet the demands of your planted aquarium.
Built for aquascapers who demand professional-grade performance, the GLA CO2 Reactor delivers precise CO2 control, unmatched efficiency, and superior plant health.
Customer Reviews
-
My diffusion is at level 1000 now!
Took a few days to get completely dialed in, but holy crap pearling plants! Using an in-tank diffuser prior I got minimal pearling. But now, some of my plants started floating to the top they were so bubbly! Never in my life would I have ever considered a reactor until seeing one of these at my LFS. I’ll never go back to an in-tank diffuser this thing is incredible.
-
An absolute unit.
Wasn’t really sure how big it was going to be. It’s huge lol. But not only that it’s extremely well made, very high quality and works exactly as it should. Really cool, came with 3 sets of hose connections and even scroll of Teflon tape and some gaskets. 10 out of 10 from me!
-
This reactor is super nice.
Wasn't expecting this when I opened the box. Very nice size and quality craftsmanship. For my 90g its working flawlessly. If you are looking for a profesional grade co2 reactor, this is it.
-
Works perfect!
My first reactor and I’m beyond pleased. I was over the 7-Up look from my regular diffuser and since using this reactor the active pearling is intense. Plants are responding and I’m sure my fish are loving the extra oxygen produced by the plants. Very high quality co2 reactor!
-
I found the solution to my co2 levels in this co2 reactor.
Almost gave up on my 120g scape due to so many issues keeping my co2 levels stable. I will say GLA helped a ton with my tank. I was doing so many things wrong I had no idea. By implementing this reactor and GLA’s guidance my plants are busting with oxygen before lights out. Amazing product and customer support you’d expect to pay for, I certainly should have paid them for all the help. Thank you GLA.
-
Where has this been all my life!
My plants are pearling like crazy since I started using this reactor. Needless to say this bad boy works!
-
This is one heck of a co2 reactor.
I saw the dimensions in the listing, but it doesn’t do it justice. The bad boy is nice and big. I have this on a 160g tank and it’s working superbly. It did take me a couple days to adjust things, to be expected. Super happy, very well made reactor from GLA.
-
Works like a charm and total clarity.
Works flawlessly. My tank is finally crystal clear and no issue with fizzy looking water. However I will say be sure ot use a check valve on your co2 tubing as this does not come with one. Also, cool side effect happens is your plants will start to produce millions of oxygen bubbles. My old diffuser was able to do this at a fraction of the level. Now the amount of oxygen production is super intense and quite beautiful. My fish eat the pure oxygen bubbles for dinner lol. Anyways, great products from GLA Im super happy.
-
They should call this the SUPER co2 reactor.
The pictures do not do justice, this thing is a big and burly. I can not stress enough how intense my plants produce oxygen by the end of the day, its super intense and no diffuser ever did that for me. Super impressed with this, and thank you David for helping tune my co2 levels!
-
Huge thanks to GLA and team!
Highly recommend GLA products. Got a whole co2 system and this reactor and could not be happier. Everything was high quality and packaged well. Service was top notch!
