In Stock

GLA Infinite Nature Reactor SS/4.5L - Stainless Steel Aquarium CO2 Reactor

36 reviews Write a Review
GLA Infinite Nature Reactor SS/4.5L - Stainless Steel Aquarium CO2 Reactor (16/22mm)
GLA Infinite Nature Reactor SS/4.5L - Stainless Steel Aquarium CO2 Reactor (16/22mm)
GLA Infinite Nature Reactor SS/4.5L - Stainless Steel Aquarium CO2 Reactor (16/22mm)
GLA Infinite Nature Reactor SS/4.5L - Stainless Steel Aquarium CO2 Reactor (16/22mm)
GLA Infinite Nature Reactor SS/4.5L - Stainless Steel Aquarium CO2 Reactor (16/22mm)
GLA Infinite Nature Reactor SS/4.5L - Stainless Steel Aquarium CO2 Reactor (16/22mm)
GLA Infinite Nature Reactor SS/4.5L - Stainless Steel Aquarium CO2 Reactor
GLA Infinite Nature Reactor SS/4.5L - Stainless Steel Aquarium CO2 Reactor (16/22mm)
Current Stock:

Frequently Bought Together:

GLA Infinite Nature Reactor SS/4.5L - Stainless Steel Aquarium CO2 Reactor (16/22mm)
Inc. Sales Tax (Florida Only)
Ex. Sales Tax (Florida Only)


GLA Infinite Nature Reactor SS/4.5L - 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/4.5L
  • Material: Stainless Steel
  • Stainless steel reactor canister with seated O-ring and welded buckles
  • Capacity/Volume: 4.5 liters
  • External Height: 14.5 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

36 reviews

  • 5

    Bad ass!

    Posted by David Cheung on 22nd Aug 2022

    GLA is killing it with the high tech gear these days. This reactor is bad ass as it gets. Its overbuilt all over and holds my heater and cheap UV without a peep. However I did remove my UV as I find it to keep my tank temps warmer than Id prefer on my smaller tank. Loving it GLA keep it the work!

  • 5

    This co2 reactor is bad ass!

    Posted by Jonathan Davies on 16th Aug 2022

    I love it, Im using it on a 180g and have a big Eheim heater tapped into it. It works perfect. I would like to see GLA come out with some sort of pad for the bottom. Just an idea!

  • 5

    This is an aquascaping co2 reactor.

    Posted by Oscar Mendez on 12th Aug 2022

    This stainless steel co2 reactor is of the best quality. Its heavy but worth its weight. I use only the heater option as I dont have a need for UV yet so I use one of the plugs. Although I did make my own plug out of black because the white I did not like. They are just basic PVC plugs so you can use whatever you want. I was also trying to think of a way to incorporate a fertilizer injection port on one side. GLA already has it in the making, already asked. I like GLA a lot. They are the original OG's in the game. Always bringing us fresh new concepts.

  • 5

    Totally awesome co2 reactor.

    Posted by Ryan Ellis on 4th Aug 2022

    Wow! Thats the first thing i said when I laid my hands on it. It performs flawlessly and looks amazing!

  • 5

    We love this reactor for many reasons.

    Posted by Alisha Packard on 28th Jul 2022

    I could not beilive my eyes when I went to my local LFS and they had an entire GLA kit installed with this reactor. It had a heater and UV bulb all in one. Very large canister but not GLA's largest. It keeps our aquascape nice and warm,sterilized and co2 rich. Cant ask for more than that!

  • 5

    GLA Infinite Nature Reactor SS/4.5L

    Posted by Gregg on 24th Jul 2022

    Along with my GLA filter the reactor makes for an awesome combo. CO2 dissolution is complete and fast and I can finally say goodbye to ceramic diffusers and worry if they're clean or not. This baby works like a charm. Solid build and performance. I did have a technical glitch but the customer service at GLA is outstanding. I received an immediate response from them on a Sunday! Big praise when big praise is due.

  • 5

    This is a miracle of co2 ingenuity.

    Posted by Herb Gleason on 19th Jul 2022

    GLA has been my goto for almost 20 years. I saw this reactor and almost shat myself. It arrived and I was blown away, super impressive. Works terrific and by gosh it looks damn fine under my tank. It houses my heater and I just ordered a UV sterilizer. I had no way of using one before but now I do.

  • 5

    My first reactor success!

    Posted by Heather Garcia on 6th Jul 2022

    Finally a worthy reactor. I’m old enough to know a good thing when I see it and this definitely qualifies. Super super nice stainless everything. We live in Montana so it’s cold all the time so this reactor houses my heater. Huge ❤️ for that GLA. My filter pumps big water through the reactor and it handles my bubble rate effortlessly. Super happy

  • 5

    The best co2 reactor.

    Posted by Nathan D. on 5th Jul 2022

    Undoubtedly the best co2 reactor I’ve ever used or seen for that matter. I’m old, been in the aquarium hobby 42 years. I’ve only used reactors the last 22 years, I’ve used them all. This reactor rises and shines above all the rest in so many ways. Never in my life would I ever think to combine a heater and UV sterilizer in a huge reactor. Extremely well designed and made. Everything was super heavy duty and installation was as easy as any reactor typically is. I’m definitely buying the bigger one for my big tank next month. Kudos to whoever packaged this order. You can tell the folks at GLA actually care about their products.

  • 5

    An absolutely remarkable working co2 reactor.

    Posted by Scott Weinhold on 27th Jun 2022

    I really like this reactor, although has more than I would need. I will be putting my heater inside it this winter but for now I use the stock plugs. Its much larger than I anticipated and I got the smaller one lol. First impressions, extremely well made, very heavy duty. It feels like lab equipment from when I was in college. All my co2 is saturated and my tank is clear. I did get some guidance from GLA as to how to dial in co2 levels, they helped me so much. They literaly gave me a full on education in chemistry and science so I get a better understanding how to properly use a reactor. From what I have learned, most use them incorrectly. GLA's reactor is a beautiful piece and I love it.

  • 5

    I love this!

    Posted by Amanda Shultz on 26th Jun 2022

    Wow, everything a co2 reactor could be and more. So pleased with its heavy duty construction and amazing effectiveness and getting co2 saturated. It also holds my big eheim heater!

  • 5

    Beyond expectations.

    Posted by Mark Elkhart on 21st Jun 2022

    Super surprised at this product from GLA. The pictures do no justice. This is professional grade equipment here, it’s no toy that’s for sure. If your looking for a reactor, buy this and don’t even try looking at anything else, seriously people. It’s bad ass!

  • 5

    The perfect co2 reactor.

    Posted by Christopher Brown on 17th Jun 2022

    GLA has created yet another beauty to add to my installation. Its mechanically perfect, has everything you need so your not even allowed to complain about shit. Its built like a piece of lab equipment. Not only does it saturate all my co2 but it it holding my heater! GLA has knocked it out of the park with this one. Kudos GLA!

  • 5

    It is the best co2 reactor available no questions!

    Posted by Anthony Clayton on 14th Jun 2022

    Without a doubt in my mind this reactor has changed the game of co2 reactors. It holds my heater and crap box EBay UV sterilizer all in one can. Build quality is superb, and it’s likely overbuilt because it’s super heavy duty. I went the extra mile and had my wife stitch up neoprene covers for both my GLA filter and now my stainless co2 reactor. If your reading this, buy it you won’t regret it. Even my wife thinks it’s cool and has no idea what’s going on.

  • 5

    By and far the coolest co2 reactor available.

    Posted by John Casey on 5th Jun 2022

    Its a peach! What more could you ask for, a reactor that serves 3 purposes. I put my Oase heater in one core and a cheap Amazon UV in the other. Im blown away! This is the smaller of the two new reactors they make, but even the smallest one is the largest reactor you will find. Your co2 will saturate 100% in this honey of a reactor. Its extremely heavy duty, possibly stronger than anything you own. Its built with accuracy and I know for a fact its going to last a lifetime. One day I will get the next size up when I get a larger tank and filter.

  • 5

    The best aquarium co2 reactor.

    Posted by Nigel Rutgers on 2nd Jun 2022

    It’s pricey, and worth every penny. It’s an absolute unit! It has all the bells and whistles and complete stainless everything. I use this with a GLA Infinite nature aquarium filter and could not be more pleased. Everything works and looks soooo good!

Join the List