Description
GLA PRO-CO2 Reactor 5L – Maximum CO2 Saturation for Nature Aquariums
The GLA PRO-CO2 Reactor 5L is engineered for unmatched CO2 dissolution, delivering maximum efficiency with virtually zero waste. Built for serious aquascapers and high-tech planted aquariums, this reactor ensures stable, high-level CO2 saturation to support vibrant, healthy, and fast-growing aquatic plants.
Key Features:
- 5L High-Capacity Reactor Chamber: Designed to handle high-flow filtration systems while maintaining consistent CO2 saturation throughout the water column.
- Precision-Designed in the USA: Constructed from professional-grade, crystal-clear acrylic for durability and long-term performance (19" tall × 6" diameter).
- Whirlpool Diffusion System: The internal vortex chamber creates a high-flow whirlpool effect, ensuring complete CO2 absorption before water returns to your aquarium.
- Universal Tubing Compatibility: Supports 12/16mm, 16/22mm, and 20/25mm tubing for seamless integration with most canister filters and external pumps.
- Quiet, Bubble-Free Operation: Eliminates microbubbles and CO2 noise common with diffusers—ideal for display tanks and living spaces.
- Maximum CO2 Efficiency: Reduces CO2 loss and ensures every bubble is fully dissolved, saving gas and improving stability.
- Maintenance-Friendly Design: Wide body and removable top allow for quick cleaning and access to internal components.
Installation & Functionality:
- Connect the reactor inline with your canister filter’s return/output line.
- Attach CO2 tubing using the built-in Speedfit connection—a secure, tool-free fitting with an integrated on/off valve for precise CO2 control.
- Allow the vortex system to create a high-energy mixing environment that fully dissolves CO2 before water re-enters the tank.
- Adjust your CO2 rate to match the demands of your planted aquarium for optimal growth and stability.
Why Choose a GLA CO2 Reactor?
- Professional-Grade Performance: Built for high-demand aquascapes requiring stable and high CO2 levels.
- Enhanced Plant Growth: Provides consistent, fully saturated CO2 delivery that drives lush growth and stronger coloration.
- Ideal for Larger Tanks: Perfect for medium to large nature aquariums where diffusers cannot keep up with CO2 demand.
- Energy Efficient: Works flawlessly with existing filtration—no additional power required.
Built for aquascapers who demand uncompromising performance, the GLA PRO-CO2 Reactor delivers precise CO2 control, maximum dissolution efficiency, and superior plant health for the most demanding planted tanks.
Customer Reviews
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Love it!
Very happy with this giant co2 reactor. Quality material and craftsmanship and it works just like it should. Tank is a 150g abd pearling nicely!
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This is much better than a diffuser.
I’ve been very pleased with this reactor. There is a lot to learn when using a reactor. Without the educational support of GLA I would not have known I was doing everything wrong, or mostly wrong. This has my co2 levels extremely stable now that I’m properly set up. My plants now pearl like crazy and trimming is now the focus of attention on my aquascapes. I came today to buy another one for another aquascape using a regular diffuser. The folks at GLA are extremely nice and helpful beyond measure. They treat you like a family member which is rare this day and age. Shout out to Brian for all the help you offered me along my journey.
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Big boy co2 reactor!
Even though I measured I was impressed when it arrived. The volume is nice and big. It has no issue handling my 160g tank with high levels of co2. Took me approximately 3 days to dial in with a ph controller and is now fully automated. Apex controller shows co2 levels are super stable 24/7. Worth every penny and really good quality craftsmanship.
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This is an absolute unit!
Much bigger than anticipated. Hooked up to a Fluval FX using tubing adapters on the inside of the fluval tubing and hose clamps. Works fantastic! Took me two days to get my drop checker into the yellow with about a 1.5 drop in ph. Super pumped on this reactor, especially the lack of visible co2 bubbles.
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Co2 reactor
This was the very best CO2 management tool ever created for the planted tank hobby. It dissolves the CO2 with such precision and purity that it would be hard to imagine there being anything else out there that can beat it. I’ve never minded diffusers or the bubbles but the CO2 fluctuated. This unit even after the CO2 regulator shuts down is still holding and dissolving CO2 through the night. Just gradually keeping the aquarium stable. Whom ever designed it “ Nailed it “!!!!!!!
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This co2 reactor works!
Have had this hooked up to my Fluval FX for about a week. It took my a few days to get my co2 levels dialed because I was moving slow, but man does this work extremely well. Plants are super pearly by mid day. Zero complaints!
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GLA products
There many companies out there to chose from but not like GLA. I purchased everything for my planted tank from them and the quality is spot on. The support team is super cool and stay with you till they know your set. Thanks GLA.
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They should call this the co2 blaster 1000
This thing works! It’s a true beast of a co2 reactor and works flawlessly. Pro tip: This isn’t a diffuser and works on different principals so if you’ve never used one have GLA free tech support help you adjust your system. GLA was absolutely stellar with customer support. They helped me tune my aquascape gas exchange and now my plants are growing before my eyes, literally! The pearling I get now is just unreal and a sight to see. This co2 reactor is worth every penny.
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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.
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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!
