Aquario Neo CO2 Diffuser

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  • Produces Small CO2 Bubbles
  • Made of Break-Resistant Acrylic
  • Easy to Install

This CO2 diffuser from Aquario is one of the best on the market. It features a small, brown ceramic disk which does an excellent job of breaking down CO2 gas into the finest mist of bubbles. The finer the bubbles, the better the CO2 can dissolve in the water and therefore plants have an easier time utilizing the CO2.

The other great part about this diffuser is that it's made out of break-resistant acrylic as opposed to glass so it can very easily be attached to tubing without having to worry about smashing it. Suction cup is included for easy installation. We've found the large size diffuser to work in any aquarium and as such, we only carry the one size. Co2 pressurized gas system required to utilize this product.

Customer Reviews

Based on 97 reviews
Dan D. (Seattle, WA, US)
Good Bubble Formation

Great little diffuser at the right price. Good bubble formation after soaking properly. Wish they sold some different sizes for different depth tanks but I am happy!

Frank L. (Peotone, IL, US)
Works awesome

So I have this on my 5 gallon tank running about 1 bubble every 1.5-2 seconds and it will make super fine bubbles. The amount of growth I’ve gotten is well worth the investment into co2. The only issue I had was I don’t think I had the airline pushed far enough down and on day 2 it popped off but since then no issues.

jacob n. (Omaha, NE, US)
Co2 diffuser

Works great, easy to install and the fine bubbles are better than any other that I have used.

Jason C. (Clearfield, UT, US)

Works well and does the job

Patrick (The Bronx, NY, US)
Great diffuser!

I always used the black fluval disc diffuser because I could purchase them locally. But as I added co2 to more aquariums I found they were hit and miss. Some of them just never seemed to work right. I decided to try these. I’m now up to 5 and all of them put out a fine mist. I also like that you only have to soak them for a short time for them to work like they should. The fluval ones were all soaked for 24 hours and still needed a full day of use before the ones that worked right would put out a good mist. I also like the two suction cups and the fact that these kind of disappear in the aquarium. I’ll be using these moving forward.