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GLA Infinite Nature Reactor SS/5.2L - Stainless Steel Aquarium CO2 Reactor

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GLA Infinite Nature Reactor SS/5.2L - Stainless Steel Aquarium CO2 Reactor (16/22mm)
GLA Infinite Nature Reactor SS/5.2L - Stainless Steel Aquarium CO2 Reactor (16/22mm)
GLA Infinite Nature Reactor SS/5.2L - Stainless Steel Aquarium CO2 Reactor (16/22mm)
GLA Infinite Nature Reactor SS/5.2L - Stainless Steel Aquarium CO2 Reactor (16/22mm)
GLA Infinite Nature Reactor SS/5.2L - Stainless Steel Aquarium CO2 Reactor (16/22mm)
GLA Infinite Nature Reactor SS/5.2L - Stainless Steel Aquarium CO2 Reactor (16/22mm)
GLA Infinite Nature Reactor SS/5.2L - Stainless Steel Aquarium CO2 Reactor
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GLA Infinite Nature Reactor SS/5.2L - Stainless Steel Aquarium CO2 Reactor (16/22mm)
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GLA Infinite Nature Reactor SS/5.2L - Stainless Steel Aquarium CO2 Reactor (16/22mm)

  • Experience GLA's Infinite Nature aquarium CO2 Reactor, solid stainless steel, heavy duty, professional CO2 reactor for freshwater planted aquariums. Handcrafted stainless steel perfection for everyday life, exquisitely built to last and never look back.
  • External CO2 reactor for high efficiency CO2 dissolution by internal whirlpool waterflow, allowing 100% CO2 dissolution in nature aquarium water
  • Mount the reactor external to your aquarium tank in the cabinet, installed inline within the outflow hose/tubing of your canister filter
  • Modern, innovative design allows for customization to suit your aquarium installation. *accommodates optional installation for external aquarium heater and/or UV filter, to keep your aquarium cabinet tidy. (accessories not included)
  • Hand assembled in the USA


  • Series: GLA Infinite Nature Reactor SS/5.2L
  • Material: Stainless Steel
  • Stainless steel reactor canister with seated O-ring and welded buckles
  • Capacity/Volume: 5.2 liters
  • External Height: 18.5 inches
  • Diameter: 6 inches
  • Fits filter hose size 16/22mm ID/OD (inside diameter /outside diameter) *to convert installation to accommodate 12/16mm size, then it's recommended to purchase two of the quick release filter coupling (12/16 to 16/22mm adapter)

Customer Reviews

20 reviews

  • 5

    GLA Co2 is the best of the best no question.

    Posted by Amy Halburt on 9th Jan 2024

    We run full GLA co2 systems at our store and do not recommend anything less. Dont be no sucker for cheaper alternative. This reactor is phenomenal. How anybody could complain about this reactor is absolutely stupid.

  • 5

    This is a beast!

    Posted by Kirk Jones on 3rd Jan 2024

    I love it. Super high end and works phenomenal. This is definitely the largest reactor available. I looked everywhere and this thing is bad ass. Injecting GLA's new liquid fertilizer they have not released yet into one of the ports and heater in the other. Love it bro!

  • 5

    This co2 reactor is awesome!

    Posted by John Delaney on 12th Nov 2023

    Its huge! Just in time for winter too. I stuck my heater in it and its been working flawlessly. I dont have any plans yet to use a UV but perhaps after winter. It sure as heck does a great job with co2 in my 120g tank. Couldn't be happier!

  • 5

    GLA has the best equipment.

    Posted by David Allison on 29th May 2023

    So far Ive purchased GLA's full line of stainless equipment and I could not be more thrilled. From the tools to the filter and now this stainless co2 reactor. I like that GLA is always pushing the boundaries on everything. They have brought so much to aquascaping :) This reactor works 100% amazingly well and is able to handle massive flow, so go for it if you like big sexy aquarium equipment because GLA is not holding back. My tank is crystal clear now with no co2 bubbles causing that 7-Up look in the tank lol

  • 5

    This is the bee's knee's!

    Posted by Eric Carlisle on 16th Apr 2023

    One year in and Im super pumped and not only that I have yet to clean it. Maybe the UV stick I use from Amazon keeps it sparking inside? I run a big GLA 22l canister filter and it purrs like a kitten. I was worried mostly how my stem plants would behave and to my surprise the tank is now pearling much more intensely. Or maybe its the lack of co2 bubbles which I must tell you, its absolutely beautiful. Super clear water and pearling plants.

  • 5

    GLA Co2 Reactor is the king of co2 reactors.

    Posted by Allan Wienstine on 15th Apr 2023

    This is an absolute beast of a reactor. GLA Co2 system with the 22L filter has been absolutely beautiful. I cant wait for the restock to arrive I will be buying two more sets!

  • 5

    Super co2 reactor.

    Posted by Axel Schlem on 12th Sep 2022

    Very satisfied with this purchase and waiting to buy the smaller one. These are very large, so you going to need a good pump to power through it due to its volume. Its very possible this has more volume than your current filter if you plan to use a filter to power it. I use the GLA 22L filter at 80%. This is a beautiful piece of equipment.

  • 5

    Amazing piece of aquarium equipment.

    Posted by Bradley Bishop III on 7th Sep 2022

    Never in my life would I thought a product like this would exist. Then here comes GLA with this bad boy. Its a beast, and its just looks amazing under my tank. I love that my heater is out of the aquarium now and I dont need some inline heater either. GLA always with the fresh new gear!

  • 5

    Game changing co2 reactor.

    Posted by Hector Rosado on 3rd Sep 2022

    Very well made co2 reactor. My heater fits perfectly and Im utilizing the second port as my fertilizer auto-dosing port. I tapped into my own PVC plug with speedfit tubing connection. This reactor is just amazing. It will outlast your lifetime due to its durability. My co2 is 100% saturated and plants pearling by late afternoon. Kudos GLA!

  • 5

    Its everything we've been waiting for.

    Posted by Hector A. Rodriguez on 29th Aug 2022

    This is an absolute unit fellow aquascapers. Youeve never seen anything like it. GLA has brought us a tremendous gift. I now have a place to house my heaters. I put two in this bad boy and its been amazing. Co2 totally saturated. Full stainless steel everything, even the gadgets at the top. Im currently on pre-order for the GLA filter and this will complete my GLA engine room. So much love here :)

  • 5


    Posted by Avery Hall on 28th Aug 2022

    I recently purchased and installed this Co2 reactor (It is replacing a DIY reactor). It runs silent, the installation was effortless and my Co2 consumption has been decreased significantly. I really like its clean look. My only wish is that I had glass doors on my aquarium stand so I could see it more regularly. I highly recommend this to anyone looking to enhance their planted aquarium.

  • 5

    Much larger than I anticipated!

    Posted by Rocco Castoro on 17th Aug 2022

    Super big, perfect for huge tanks with high GPH from the pump and high co2 flow rates. GLA killed it with this!

  • 5

    GLA co2 equipment is unparalleled.

    Posted by Jake Ferguson on 11th Aug 2022

    Ive been a long time customer of GLA and they keep upping the game in co2. You always see GLA come out with the new designs with the knock offs soon to follow Im sure. This reactor is no exception to GLA's enthusiasm for providing aquascapers with the best and newest tech. This reactor does it all, its just beautiful and works perfect with my 120cm aquascape. Ive yet to use a heater or UV but rest assured I will be diving into that soon. My co2 is always in the green everyday, did I mention its beautiful? Because it is!

  • 5

    This is the best aquarium co2 reactor in the world.

    Posted by Roberto Rodriguez on 4th Aug 2022

    I said it, its the best co2 reactor I have ever used or seen for that matter. This reactor does everything, but I do not have a UV yet but I have one on the way. Beautiful finish and craftsmanship throughout. GLA is the best!

  • 5

    An aquascapers dream co2 reactor.

    Posted by Jeff Abbot on 1st Aug 2022

    More than just a co2 reactor. This co2 reactor is super incredible. Its built like none of my aquarium equipment. Extremely heavy duty, more so than my home appliances. Fits my Eheim Heater perfectly. Ive installed a cheap Amazon UV stick and DIY'd a cool chord keeper system. I did add a set of the GLA couplings, I dont think I will ever need to service the reactor except for cleaning bacteria off my heater and UV bulb. My co2 is totally saturated,heated and sterilized. This is why I love this reactor.

  • 5

    This is the absolute best co2 reactor.

    Posted by Mike Ziegler on 18th Jul 2022

    If your anything like me you hate co2 bubbles and use a reactor already. I have been using reactors my whole adult life so far of 37 years. Ive used many of my own DIY reactors and several commercial versions still available. Most of them worked ok, but never terrific. They were also butt ugly no matter DIY or commercial. This reactor here, is like nothing folks even imagined on the market. GLA brought this to the world and I had to give it a try. My wife got it for me as an early birthday gift to myself. I say got because she allowed me to purchase it. You all know the drill here lol.  This reactor is overbuilt, heavy duty and does everything I ask of it. Its huge, way more huge than any reactor Ive ever seen and it weighs a ton. It works perfect and makes the rest of my dated equipment look like garbage. Now I have to update the rest of my kit. If your reading this and looking for a big reactor to last longer than life itself, buy this.

  • 5

    Outstanding design from GLA.

    Posted by Hank Freeman on 15th Jul 2022

    I was intrigued after watching the video on youtube. I use this with GLA's 22L canister filter at 80%. Its a thing of beauty and functional design. It hides a heater and a UV if you use them. I use only the heater module. I love it, you could not possibly ask for more from a co2 reactor. GLA A+

  • 5

    This is undoubtedly the best co2 reactor.

    Posted by Frank Richmond on 7th Jul 2022

    I never thought a day like this would come where I received a reactor that works. My tank is on the larger side of 300g so my pump pushes quite a bit of water so we chose this giant. It’s way more than I’d bargained for, it’s a masterpiece of real co2 art. Look no further, this is the bees

  • 5

    The king of all co2 reactors.

    Posted by Elliot Armstrong on 17th Jun 2022

    This is it, this is as good as it gets without being some digital futuristic device I would have no part of. I can say I have built many of pvc reactors in my day, DIY serges reactors you name it I have tried it. This GLA stainless steel reactor is the absolute best . For starters its overbuilt, its likely stronger and nicer than any other piece of equipment you have. It has all the features any reactor could ever possibly want, with all the options of putting your heater or UV or both! How could you possibly think you could build better? Answer, you will not. This is one massive reactor that is for very large tanks. You will need a powerful filter to push water through this puppy. Love you GLA!

  • 5

    This is without question the best aquarium co2 reactor.

    Posted by Raphael Hernandez on 30th May 2022

    I have all the co2 reactors people, even the older GLA reactor and a few DIY PVC reactors from the Rex Grig days. You can tell its of the best quality just from looking at these pictures, but when you open the box it will blow you away. It has everything a co2 reactor should have and much more. First, the tubing connections are all stainless. It has a built in stainless bleed off valve. Two massive stainless heater cores to use either your own glass heater or optional UV stick in the secondary port. I have not needed to use my UV but I think I will just start using it in my reactor. This is the largest co2 reactor I have ever seen, it will not be for everybody so take note of its dimensions, its absolutely massive. GLA once again brings us new tech just like they did with my manifold co2 system. Bravo GLA, the community thanks you!

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