FZONE Desktop Aquarium CO2 System,45g CO2 Cartridge,5/8" & 3/8" Compatible

If you've been on the fence about trying CO2 in your aquarium, this is a cheap and easy way to get started. Setup was quick and it started working right away. It comes with everything you need: the CO2 system itself, tubing, solenoid, and diffuser. It's also visually appealing, made of aluminum rather than cheap plastic. I'm running it on an 8 gallon fish bowl and the difference has been noticeable, plants are putting out thick, healthy growth. For such a small footprint, it packs a lot of value. Give it a try!

I really love how compact this FZONE CO2 unit is. It fits perfectly next to my 10 gallon aquarium on my desk without taking up much space at all. It is very easy to use and a lot more economical than other systems I looked at. I added the solenoid to mine so it turns on and off automatically, which makes the whole thing super convenient. If you have a smaller planted tank and want something that works great and looks clean, this is a solid choice.

WOW! This is a great little setup. I had a larger F-Zone reactor kit and this works just as good as the big guys. THe value for the money is amazing as you can get new cartridges for cheap. No noise to speak of, I added it to an inline diffuser and it's crushing it! after jus about a week my tank has perked up immensely, beautiful greens and looks like more root growth and spreading. Well made, super durable and seems to be super well made. If you want an easy solution for CO2 I would go with this all day long!

This is my second time ordering one. The first time when i received it, it was leaking the co2, so i reached out to the seller and they sent me a replacement. It worked great and still does, so i decided to finally get another one, which leaks again :( . I guess it’s a hit or miss.

Good entry to CO2. Easyish install (basically just use the 1 gasket that's already preinstalled for the 45g canisters, I was initially confused but read someone else's review that was also struggling with what I was and that helped) Clean design and pretty solid feel. Currently running 2 since May so I've had them for some time, 1 in a 10 gal and the other in a 5 gal. I have both paired with TwinStar diffusers, check valves, and the fzone solenoids. Now it would be 5 stars if: Instructions were clearer as I mentioned above, it is confusing with the gaskets and whatever else they give you. Sometimes the canisters last a month, sometimes it's a couple days. It does leak sometimes. It either doesn't consistently puncture the canisters the same every time or there's something in the design, not sure. Yes I've double checked tightness of canisters, hose connections, and my check valves. The canisters are priced pretty well and ships next day so it's a double-edged sword, lasts a while and you don't have to pay much for co2 or it leaks and you gotta buy more sooner. Now I do have two so I think they're worth it, you just gotta be aware of your co2 levels and maybe have a few canisters on standby.

Works very well for my 6 gal cube nano tank on my desk. My plants are happy and caridina shrimp are doing well even with the co2 injection. Co2 drop checker at a good green color. The co2 system is very good quality and looks high tech and minimalistic. Good size for my desk space!

Really easy to use and works well.

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!

Great simple little CO2 system, I use it for a nano-cube in my living room where I don't want to run a full, heavy CO2 setup and it worked great. The 45g cartridge provided only lasted about 1 month at roughly 1bps but for a good looking compact setup I can't fault it too much.

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 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.

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!

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.