Welcome to the NEW In-line CO2 Diffuser with Replaceable Ceramic Membrane
The V2 version of our classic In-line CO2 Diffuser features an improved ceramic membrane developed with Fine Mist Technology, delivering the highest dissolution rates.
The CO2Art In-line Diffuser optimises CO2 injection for maximum absorption and minimal waste. CO2 bubbles pass through the porous ceramic membrane and are broken into tiny bubbles, increasing CO2 saturation in the water column. This enhanced saturation supports healthy and fast plant growth.
If you use an external filter, the in-line diffusion method is ideal. The diffuser can be positioned outside the aquarium, allowing for clean and efficient CO2 delivery.
| Feature | Description |
|---|---|
| Membrane Type | Replaceable ceramic membrane with Fine Mist Technology |
| Diffusion Method | In-line, with bubble dispersion through porous ceramic |
| Best For | External filter setups and aquariums with high plant demand |
FAQ
How does the ceramic membrane improve CO2 dissolution?
The ceramic membrane uses Fine Mist Technology to break CO2 bubbles into smaller droplets, increasing surface area and enhancing dissolution rates in the water.
Can the ceramic membrane be replaced when it wears out?
Yes, the diffuser features a replaceable ceramic membrane, allowing for long-term use and maintenance.
Is this diffuser compatible with external filters?
Yes, the in-line design is specifically designed to work with external filters, allowing placement outside the aquarium.


Carolyn Blake –
The diffuser works very smoothly with my external filter. The plants have grown noticeably faster since I installed it. The ceramic membrane is easy to replace and the bubbles are fine and consistent.
Piers Piper –
I noticed a significant improvement in CO2 absorption. The water looks clearer and my plants are thriving. It’s a simple setup and fits well in my filter line.
Ava Edmunds –
After switching from an older model, I see better plant growth and less CO2 waste. The fine mist technology makes a real difference in water saturation.