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 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.

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!

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.

Solid, well made, easy setup, and small/ easily hidden. Great inexpensive way to introduce controlled co2 for smaller tanks that doesn’t take up space. Daunted by other systems and price I opted for DIY methods previously- it worked but was never consistent with under/overproduction. This system worked immediately, takes a few seconds to manage, and I don’t need to constantly check on it throughout the day.

First of all, excellent system. It was fairly easy to put together, had it set to .5bps, and it worked perfectly.....for 2 days. On the third day, can was empty. I was extremely disappointed, then read through reviews, and realized the instructions were incomplete (probably the Chinese translation issues). There is a gasket that must be placed in regulator before the canister, otherwise it leaks. This CO2 system seems to work well, albeit much more expensive than other options, over time, especially after ordering 2 more canisters to replace the new empty one. I do recommend this, just make sure to use the gasket.

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!

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’ve been looking to get into CO2 for a while and this is an amazing set up on a budget! Super easy to put together and bubble counter is very precise! Great product and looks very sleek next to my tank 🙌

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!