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Availability:
Only 5 left in stock, order soon!
Arrives
Thursday, Jan 22
Size: M-17mm
Features
- The customized ceramic from South Korea used in Fzone co2 diffuser features microscopically small holes resulting in very fine and thorough bubble diffusion.The co2 diffuser provides a high level of CO2 Saturation in your aquarium. The fine mist of Co2 will easily break down into your water colum and absorbed by aquatic plants.
- Sleek and sturdy, the Co2 diffuser specially crafted to be micro porous the ceramic disk is permanently adhered to an acrylic bubble counter for a tight fit to hold under high pressure & provide a super fine mist of Co2. The from high-quality, transparent acrylic and is not easily broken when preforming aquarium maintenance.
- The aquarium co2 diffuser with the provided suction cup, users are able to place it in the corner of the planted aquarium securely.
- Only 20PSI(1.37bar) needed, The diffuser works with all CO2 system, even DIY steps. Recommend pressure higher than 25PSI.
- 3 model meets different tank size need. S for 1-2 bps(bubbles per second), for 13gal or less. M for 2-3 bps(bubbles per second), for 13-32gal. L for >3 bps(bubbles per second), 32 Gallons or more
Brand: FZONE
Item Weight: 0.02 Pounds
Item Form: Device
Manufacturer: FZONE
Package Dimensions : 3.74 x 1.34 x 1.06 inches; 0.32 ounces
Date First Available : April 2, 2022
Manufacturer : FZONE
Best Sellers Rank: #13,724 in Pet Supplies (See Top 100 in Pet Supplies) #23 in Aquarium Air Pump Accessories
#23 in Aquarium Air Pump Accessories:
Customer Reviews: 4.2 4.2 out of 5 stars (851)
Item Weight: 0.317 ounces
Manufacturer: FZONE
Date First Available: April 2, 2022
Item Package Dimensions L x W x H: 3.74 x 1.34 x 1.06 inches
Item Weight: 0.02 Pounds
Brand Name: FZONE
Target Audience Keyword: fish
Directions: Attach the diffuser to the aquarium using the suction cup. Connect it to the CO2 system. Set the pressure higher than 25PSI. Ensure the diffuser is placed for even distribution of CO2 bubbles.
Size: M-17mm
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Jan 22
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Size: L-24mm
The media could not be loaded. I’m sure what the other reviewers were about but this work greats!! It produce small enough bubbles that dissolve very well even for shallow tanks. The suctions on the diffuser has not failed even when I accidentally push it around. That and my plants are definitely growing well while it also helps me fight the BBA algae, amazing product and easily a good investment. Also the built in bubble counter was a nice touch ;)
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Reviewed in the United States on October 20, 2025 by Kengo Trung
Size: M-17mm
I’ve had this diffuser running for a couple days now and I’ve had zero issues. It produces very small bubbles, and mists the tank well. I have it running on about 0.5 bubbles per second right now.
Reviewed in the United States on December 13, 2025 by Jack Valzania Jack Valzania
Size: L-24mm
The media could not be loaded. Extremely satisfied with the fzone diffuser . Purchased one for my 50 gallon aquarium and love how small the bubbles are coming out of the diffuser. Love how well it works and would highly recommend!
Reviewed in the United States on December 13, 2025 by Jasmin Garcia Andraca
Size: M-17mm
The diffuser did not work as shown on the video. large bubbles come out of the diffuser along with small bubbles
Reviewed in the United States on December 19, 2025 by Paul Edwardson
Size: S-13mm
In just a matter of days this nano diffuser did what it was built to do. Very tiny micro bubbles with even distribution throughout the aquarium. With only 5 days of running it I’ve seen a massive improvement on plant growth. Easy to connect, perfect size, affordable price point and accurate distribution per the vendor. Ordered a few more for all my other tanks! Thanks again Fzone, as usual. You always aim to please!
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Reviewed in the United States on September 2, 2025 by Adrian Hernandez Adrian Hernandez
Size: M-17mm
Air doesn't come out. Soaked for 2 days and nothing. Tried blowing and nothing. I need help from the provider. Works well. This needs 15 to 20 PSI to start flowing. If not, air will not flow. The diffusion of bubbles is amazing. Recommended.
Reviewed in the United States on February 27, 2023 by Joan Febles
Size: S-13mm
The media could not be loaded. I can’t speak to whether or not customers may have received faulty product from earlier (or later?) versions or old stock, but I had excellent results right out of the box. (video – the Fzone diffuser is the one on the right) I’ve read a lot about slow-moving or discontinued items being promoted as “newer versions” in order to move old stock off the shelves, as well as companies compromising quality or materials to stay afloat in a distressed economy, which explains why I see so many disparaging reviews about newer iterations of the same product. The rating I gave this not an endorsement, but a simple account of my own first experience with it. I’ll probably buy another. UPDATE: Manufacturer responded to my inquiry about how to keep diffuser disk from getting algae clogged over time. They suggested couple of hours soak in citric acid solution. I substituted the citric acid for H2O2. Worked great. I'm guessing a soak in Flourish Excel might also work. I also read somewhere that bleach soak may dissolve the glue that seals the disk to the bulb. I previously used the Fluval mini-tire-shaped diffuser with good results, but they require more frequent unclog soakings, and bubbles grow larger as CO2 pressure drops, whereas bubbles remain consistently small passing through this Fzone disc, even as CO2 pressure begins to drop. I like these Fzone diffusers a lot for my D.I.Y. CO2 setups. I will be ordering more for my planted tanks. Also, they are made from a hard plastic, not glass. Not unbreakable, but less brittle than glass.
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Reviewed in the United States on January 13, 2025 by JB L.
Size: L-24mm
The media could not be loaded. First I bought the smaller size and it was really small lol So I bought one size bigger (L?) and look how nice the bubbles come out! I feel like I'm watching a movie. Your plants get vivid if you have CO2 so this was definitely an essential item for my DIY CO2 kit. pros: Works great for your CO2 kit. cons: M size might be tinier than you think.
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Reviewed in the United States on August 7, 2025 by Sunny