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Fzone Neo CO2 Diffuser with Customized Ceramic from South Korea(S-13mm)

  • Based on 1,068 reviews
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Availability: In Stock.
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Arrives Wednesday, Sep 23
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Size: S-13mm


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

Description

The Co2 diffuser is the main component of delivering Carbon Dioxide into the aquarium. The Co2 diffuser is usually connected to a bubble counter with Co2 tubing & is controlled by a needle valve for precise delivery of Carbon Dioxide injection. The main purpose of the diffuser is to break down the large bubbles into tiny bubbles from the Co2 regulator to dissolve in the water. Why Choose Fzone NEO diffusers: The special Fzone NEO diffuser adhered with customized ceramic from South Korea features microscopically small holes resulting in very fine and thorough bubble diffusion. The diffuser chamber itself is smaller in size, decreasing its presence in the planted aquarium tank. *Tip: Recommend pressure higher than 25PSI. S/M/L for your choice *Tip: Larger Aquario NEO Acrylic Diffusers may be used in smaller tanks. Diffuser x1 Suction cup x1 Tip: Soak the diffuser in water for 30 minutes before use to produce the smaller bubbles. TIP: When bubble diffusion is slowed, soak it in bleach for 10-30 minutes and rinse with water thoroughly to ensure any residual bleach is gone — Enjoy the Art of Aquascaping Founded in 2018, Fzone creates aquarium products that combine high quality with clean, aesthetic design. What began as a passion grew into a mission — to offer products that are reliable, precise, and visually refined. We focus on CO₂ systems and aquarium accessories that improve plant growth while keeping setups neat and elegant. Thank you for your support — we look forward to growing with you.

Brand: FZONE


Liquid Volume: 32 gallons


Item Weight: 9 g


Item Form: Device


Unit Count: 1 Count


Package Dimensions ‏ : ‎ 3.82 x 1.34 x 1.06 inches; 0.32 ounces


Item model number ‏ : ‎ S-13mm


Date First Available ‏ : ‎ March 25, 2022


Manufacturer ‏ : ‎ FZONE


Best Sellers Rank: #13,775 in Pet Supplies (See Top 100 in Pet Supplies) #22 in Aquarium Air Pump Accessories


#22 in Aquarium Air Pump Accessories:


Customer Reviews: 4.2 4.2 out of 5 stars (1,068)


Brand Name: FZONE


Unit Count: 1 Count


Manufacturer: FZONE


UPC: 764595878634


Model Number: S-13mm


Manufacturer Part Number: 1


Liquid Volume: 32 gallons


Item Weight: 9 g


Item Form: Device


Pet Type: Fish


Target Species: Fish


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Sep 23

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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View our full returns policy here.

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Top Amazon Reviews


  • Cleaner Look, Better Performance
Size: M-17mm
I’ve been really impressed with this diffuser so far. I swapped it out with the stock diffuser that came with my CO2 kit, and the difference was noticeable right away. The bubbles are much finer, which helps them stay in the water longer instead of shooting straight to the surface, so it seems to be dispersing CO2 much more efficiently. I also really like the design. It has a much sleeker, more modern look than my old diffuser and blends into my planted tank a lot better instead of sticking out. It’s a small detail, but it definitely fits the overall aesthetic of a clean aquascape. Installation was simple, the build quality feels solid, and it started producing a consistent mist after soaking it. Overall, it’s been a worthwhile upgrade, and I’d definitely recommend it to anyone looking for better CO2 distribution while also improving the look of their planted tank. ... show more
Reviewed in the United States on August 3, 2026 by Cassidy

  • When you just want something that works
Size: L-24mm
Prior to adding CO2 to my tank I did a ton of research. If you are in the same boat as me you’ve probably watched several videos and YouTube and read a bunch of reviews trying to figure out what makes sense. Well in the case of your diffuser option this is the one to use. No more research necessary. The FZone diffuser is made of acrylic and that makes a HUGE difference when it comes to adding your CO2 line. The CO2 line is a bit heavier and less pliable than your regular air line. The fit around the pipette is really tight to prevent leaks. With the glass diffusers it is really easy to break the pipette rendering them useless. This isn’t the case with the acrylic. I still had to use a little heat on the hose and then moisten the pipette but it was easy and the seal is tight. I had read several reviews that said to soak the stone first so I put the diffuser in my tank the night before I installed my CO2 and it worked fantastic right away. The video shown is the large unit and the amount of CO2 I’m getting in my 55 gallon tank at 3 bubbles per 2 seconds on my FZone regulator . The bubbles are a fine mist and distribute throughout the tank easily. I placed the diffuser in the back of my tank around mid tank where current from the outlet of my canister starts pushing the water down. This provides excellent distribution of the CO2. I really couldn’t be happier with this diffuser and FZone as a company. Their products are made to last and at a price that won’t break the bank. ... show more
Reviewed in the United States on April 29, 2024 by D. Hampton

  • Good quality and tiny bubbles
Size: L-24mm
This diffuser is much better than my previous one. The old one had much bigger bubbles which traveled out of the water faster. This one is great and the bubbles have a chance to travel all of the aquarium and hopefully it will boost my plants even more.
Reviewed in the United States on June 21, 2026 by Oleksandr

  • Perfect Co2 diffuser
Size: M-17mm
Medium size is perfect for a 20g tank. Produces very fine bubbles right out of the box, no soaking needed. Affordable price and good quality!
Reviewed in the United States on June 18, 2026 by Charmyn Downie

  • Does not work. Nothing comes air comes out of the diffuser at all.
Size: M-17mm
Does not work. Nothing comes out of the diffuser at all, no matter how much pressure is used. I’ve soaked it for about 12 hours (which I had to read about since there are no instructions) and still nothing. Looking at the reviews, I’m not the only person with this issue. Very disappointing because I’ve had good luck with Fzone’s other products. ... show more
Reviewed in the United States on April 14, 2026 by JV Read

  • Works well
Size: L-24mm
This does a great job of producing small bubbles. It is the best non-inline diffuser I have used. Its clear class and small size make it easy to hide in the aquascape.
Reviewed in the United States on January 8, 2024 by Scot

  • An actual improvement in ceramic disk CO2 dispersers
Size: S-13mm
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. ... show more
Reviewed in the United States on January 13, 2025 by JB L.

  • Decent diffuser, most likely better for smaller aquariums. explanation below
Size: L-24mm
I have a 65G tank which requires a very high amount of CO2, the top of the disk has very nice, micro bubbles that mist the tank, and dont just bubble straight to the surface. however, the bottom of the disk, or potentially the seal is not adequately strong enough, i have to run 12 bps to get my Co2 sufficiently concentrated in my hard tap water, thats not unusual for me. those huge bubbles are a big disappointment for me, either bubbles are collecting on the bottom of the disk, or my product is defective/incapable of withstanding the pressure i require in my tank for sufficient CO2 levels. if you run 1-3 bps, i bet this would work fine, maybe it would still work for bigger tanks and my product is just broken out of the box, im not quite sure yet. ... show more
Reviewed in the United States on March 10, 2026 by D

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