FZONE Desktop Aquarium CO2 System, CO2 Regulator with 45g Disposable CO2 Cartridge, Compatible with 5/8" and 3/8" Threaded Interfaces, Perfect for Nano Aquariums

I just set up this awesome little CO2 system for my 23G community tank. I wanted something small and easy (being a beginner with high-tech) just to give it a try and this system didn’t disappoint. The price was right and the setup was super easy. It comes with a bubble counter but I wanted a solenoid to turn it off at night. So I got this additionally. I also got the CO2 diffuser. So far so good. It looks very sturdy for its size. All quality metal no plastic. And it is so small I could easily put it in my bookshelf. See the postcard next to it in one of my photos. I already got another one for my other tank!

I bought this specifically to grow carpeting plants in nano tanks. I am currently using it in a 2.5 gallon Iwagumi style aquarium. What I like most about this is the ability to slow down the release of co2 so that you can use it on the smallest tanks. I can easily slow down to 1 bubble every 10 seconds for my 0.9 gallon super nano tank. Because it’s so small it is very convenient to use and move around. The CO2 cartridges from FZONE are large and affordable. If you want to use smaller cartridges the adapter is included. I would highly recommend this for nano tanks up to 10 gallons. I also like how easy it was to set up and how sleek and cool looking it is. This small device gives you the ability to grow every plant faster and allows for a better selection of plants that you can use. I made a unboxing and set up video (my first one ever) hopefully it helps someone or gives you a better look at how it looks and works.

I bought this to get my tank set up and also use the solenoid. This is a very simple way to keep the CO2 regulated and much less hassle than the DIY kit I was using. When I got the replacement cartridges I had an issue with the seal not being punctured properly and I was losing a bunch of gas. I contacted support for help with that issue because the initial gasket was getting loose. I was guided through the process to use a replacement seal and a better way to secure the cartridge when they need to be changed. Once doing it the recommended way, very minimal gas leaks out after the initial puncture, the pressure is correct and the cartridge fits as it should. Zones support team replied in a timely manner with an efficient solution!

This CO2 system is perfect for my 11 gallon tank! I set it up along with their solenoid valve! It’s easy to set up and a good value! My plants are happy!

I want so badly to give this 5 stars, but unfortunately I cannot. I bought this for my 5G tank. The setup is actually pretty simple. Only problem is that I had to put this solenoid and canister into a vice grip just to get it to puncture. I lost so much co2 with the first canister. After it punctured, the co2 worked perfectly! Problem is that the co2 ran out super fast because of the puncture issue with the first canister. I bought the proper co2 replacement canisters and once again, I cannot get these damn things to puncture. I've tried everything. I cannot do this every time I need to replace the canister.

I bought this for my smaller 2 1/2 gallon tank and it’s perfect for that. It’s very beautiful very well-made it’s made for smaller aquariums and as long as you don’t do the bubble count too high it should last you for quite some time at least a month maybe two if you do one bubble a second but for smaller tanks, you might get away with even longer. FZone is a great company. I have many of their products and I love them. Super affordable and well made products that come with the best customer service. They are fast and responsive if you have any issues just email them and they will work with you to diagnose your issue and if you need a replacement or a new part they will send it out right away. I can’t say enough good things about FZone. This device makes absolutely no noise and it is very easy to assemble. A quick note- before you attach the CO2 tank make sure the white plastic gasket is in place. Mine came with the gasket in a baggy and the instructions didn’t mention installing it. I think it may have been an oversight in production but it happens. Other than that make sure you use CO2 tubing because regular airline tubing will not work because of the pressure of CO2. Also buy a drop checker device so you know how much co2 is in the water. Start slow and keep an eye out for fish gasping at the surface, thats a sign they are getting too much co2. It’s recommended to also keep an airstone attached to an airpump to keep oxygen in the water. Don’t be intimidated just do some research and you’ll get the most beautiful results with your plants and the fish thrive when the plants thrive. I would recommend this product for any nano aquatic enthusiast. I would recommend buying a nano diffuser as well. Thank you again FZone for another great product!

What an awful product. The instructions are terrible. I watched the videos, read the whole instructions, and read every single review on here before attempting to install this. And still the whole thing leaked out. I installed the white gasket, and screwed it on as tight as I possibly could; I tried the several times with the help of friends, and it simply would not pierce the co2 cartridge. There were, of course, no instructions about this step anywhere, or what to do about it. Then I realized there was actually a SECOND white gasket? So I tried that too, with no luck. There was also a small bag with a little metal needle looking piece. Maybe you need to attach that? I tried various ways without success. Finally, I tried with just a single white gasket, and screwed until it finally pierced, and immediately it leaked everywhere. I've gone back and re-read everything, and still don't know what I was supposed to do. How many gasket was I supposed to use? One or two? Why is there a little metal piece? Why is there no instructions for this crucial step? Why does the video disagree with the instruction manual? Who knows. Edit: support refunded my co2 canisters and send 2 more. They clarified that you only need 1 white gasket, and the small metal piece is apparently irrelevant. I believe my first canister may have been faulty, so when I tried to screw it in and it would not work, I had to REALLY force it and it blew up, leaking everywhere. The second time, it was very easy like in the video.

I'm new to CO2 injection and been mainly low tech and wanted to try my hand at a smaller scale before deciding if I want to go with a large CO2 tank. I looked at the reviews for the Fluval Nano system but there were too many negative reviews. So far so good I've tried this on my 10 gallon and no leaks. The mini cartridge has lasted over a month and its stated to last up to 50 days - I've kept the bubble count low as well. Since the size is so small it also doesnt take away any aesthetics from the tank. For the cost, this is a good way to learn before moving on to a larger system.

This actually works perfect perfectly. So much better than the fluval I bought. Do not think twice about ordering this item if you want a simple CO2 bubbler for a small planter tank.

Works well for nano tanks. Very simple to setup and also easy to replace CO2 cartridge. Life of the CO2 is roughly 1 month. Overall a good product and an excellent way for beginners to get into CO2.

This system is perfect for nano tanks. Extremely well made and packaged well. Instructions a bit lacking but customer service is exceptional. Much easier to watch the instruction videos on FZone website. Already ordered the diffuser and solenoid.

Product works great, cylinder wouldnt connect properly but FZONE customer support helped me out If the cylinder doesnt work for you Fluval cylinders work just fine!