CO2 Generator Kit for Planted Aquariums


  • Material: SUS304 stainless steel bottle, 1.5mm thick
  • Design: 4L DIY CO2 system with integrated regulator, needle valve, bubble counter, and 12V DC solenoid
  • Features: Supports up to 1137 PSI, Built-in safety relief valve, Precision needle valve for accurate CO2 control, Built-in check valve to prevent backflow, Compatible with external timer for automated CO2 injection
  • Includes: 4L stainless steel bottle, Regulator unit with solenoid, Bubble counter
  • Note: Citric acid and sodium bicarbonate required, not included
Size
Sale price $105.00 Regular price $120.00
Rating of 1 means .
Rating of 5 means .
The rating of this product for "" is 4.

Professional DIY kit

A complete system in 2.5L size bottle, that includes SUS304 stainless bottle, regulator, precision needle valve, and easily adjustable bubble counter. Safety valve will open automatically when the inside pressure exceeds the safety threshold.

Rating of 1 means .
Rating of 5 means .
The rating of this product for "" is 2.

High precision

Needle valve with bubble counter. Aquarium specific needle valve provides accurate fine-tuning. Steady 1 bps is achievable. Bubble counter with check valve built-in. It stops water from back flowing into your CO2 tank (protects your CO2 tanks from rust and corrosion)

Rating of 1 means .
Rating of 5 means .
The rating of this product for "" is 3.

Thicker and last longer

FZONE DIY CO₂ bottles are made from 1.5mm SUS304 stainless steel, thicker than standard bottles for improved durability and stability. The reinforced interior allows for higher capacity and longer CO₂ output. Designed to handle high pressure up to 80 kg/cm², the system delivers stable CO₂ for up to one month under normal planted tank use.

Rating of 1 means .
Rating of 5 means .
The rating of this product for "" is 4.

Professional DIY kit

A complete system in 2.5L size bottle, that includes SUS304 stainless bottle, regulator, precision needle valve, and easily adjustable bubble counter. Safety valve will open automatically when the inside pressure exceeds the safety threshold.

Rating of 1 means .
Rating of 5 means .
The rating of this product for "" is 2.

High precision

Needle valve with bubble counter. Aquarium specific needle valve provides accurate fine-tuning. Steady 1 bps is achievable. Bubble counter with check valve built-in. It stops water from back flowing into your CO2 tank (protects your CO2 tanks from rust and corrosion)

Rating of 1 means .
Rating of 5 means .
The rating of this product for "" is 3.

Thicker and last longer

FZONE DIY CO₂ bottles are made from 1.5mm SUS304 stainless steel, thicker than standard bottles for improved durability and stability. The reinforced interior allows for higher capacity and longer CO₂ output. Designed to handle high pressure up to 80 kg/cm², the system delivers stable CO₂ for up to one month under normal planted tank use.

Customer reviews
Customer reviews
This was my first CO2 tank. I don't have a place near me that can refill CO2 tanks, so I opted to try this CO2 generator. I was so thrilled with the results that one month later, I purchased the larger 4L kit for another aquarium! This CO2 generator is beginner-friendly! It's easy to assemble and the instructions on how to set it up and use it were very simple and clear. It really took all the anxiety out of setting up my first CO2 tank. I have more experience with CO2 systems, and now live near places that can fill up a "proper" CO2 tank, but I still use the FZone generators. They are convenient, reliable and hassle-free.
— Novbre
Customer reviews
I ordered this DIY Co2 system from FZone to try and replace my Co2 cartridge systems for my small planted tanks. This entire system comes in a blank box with every piece well packed in their own individual boxes. It includes the cylinder, a measuring cup, funnel, powered solenoid with wall adapter, diffuser, a glass U piece, a length of hose, the regulator, bubble counter, and manual. The objective of this is to combine citric acid and sodium bicarbonate together in measured amounts, add in water, seal the canister and allow the pressurized Co2 to build and use it for your tank. For some reason they don't specifically state the materials to combine but only say they are "materials" in the manual. It's pretty easy to weigh out and mix the materials while combining them in the cylinder but it is a bit of a chore. However, the size of this tank will last me much longer than my tiny co2 cartridges ever will as I have to replace the cartridges every few days which is adding up to a much larger bill than I would like. Overall, this DIY co2 system is awesome and comes with everything you need to get up and running besides the citric acid and sodium bicarbonate that you need to add yourself. The Co2 should last me much longer and a bit cheaper with this method than my cartridge system that I'm running.
— Zach
Customer reviews
Begin your journey with adding CO2 to the planted tankI recently purchased the Fzone 2.5 L Aquarium CO2 Generator System Carbon Dioxide Reactor Kit, and I must say, I'm quite impressed with it. This kit includes everything you need to start adding CO2 to your planted tank, making it very convenient. The quality of the components is top-notch, and you can see that the CO2 canister walls are really thick, which gives me peace of mind knowing it's safe to use and won't explode like some DIY CO2 systems using yeast. The instructions provided were incredibly clear and easy to follow, making the setup a breeze. I'm currently using it with my new 7-gallon cube, and it's performing excellently. While I wouldn't recommend this CO2 system for larger tanks, as I prefer pressurized CO2 with a regulator for those, it's perfect for smaller tanks like mine. What I also appreciate is that Fzone is a trusted brand known for its solid reputation and great after-sale support. Knowing this, I feel even more confident about my purchase. I'm very satisfied with the Fzone 2.5 L Aquarium CO2 Generator System and would recommend it to anyone looking to enhance their planted tank with CO2 injection.
— Customer Review