Seachem Laboratories Glass Pollen Style CO2 Beetle Diffuser (30 mm)
The 30 mm glass Beetle Diffuser is a pollen-style CO2 diffuser designed to connect with CO2 injection systems, enabling efficient dispersion of CO2 gas into planted aquariums. The large surface area of the 30 mm disc supports the diffusion of significant volumes of CO2, making it ideal for mid-sized to larger planted tanks with high plant growth demands.
Sold individually.
| Feature | Detail |
|---|---|
| Diffuser Type | Pollen style |
| Size | 30 mm |
| Material | Clear glass |
| Application | CO2 injection for planted aquariums |
FAQ
What is the difference between the 27 mm and 30 mm Beetle Diffuser?
The 30 mm model has a larger surface area than the 27 mm, allowing for greater CO2 diffusion capacity. It is better suited for tanks with higher plant growth or larger volumes of water.
Can this diffuser be used with all CO2 injection systems?
Yes, it is compatible with standard CO2 injection systems that provide a regulated gas flow.
Is the diffuser durable and resistant to water exposure?
Yes, the clear glass construction is designed for long-term use in aquarium environments and is resistant to water exposure.

Penelope Black –
The diffuser works smoothly with my CO2 system. The glass is clear and the flow is steady. I’ve used it in a 55-gallon tank with heavy plant growth and it maintains good CO2 dispersion without bubbles or clogging.
Una Walker –
It fits well with my existing setup. The 30 mm size provides better gas diffusion than the smaller models I tried before. No issues with leaks or performance after several months of use.
Faith Nolan –
Easy to install and maintains consistent CO2 output. The glass is smooth and doesn’t scratch easily. I noticed improved plant growth after switching to this diffuser.