Seachem Pollen Style CO2 Bubble Counting Diffuser
The Bubble Counting Diffuser is a pollen style CO2 diffuser that connects to CO2 injection systems to easily disperse CO2 gas into the planted aquarium. The built-in bubble counter allows for easy monitoring of the rate of CO2 injection. The inclusion of a bubble counter in the diffuser makes the use of a bubble counter on the CO2 tank or in-line unnecessary.
Sold in quantity of: 1
Product Specifications
| Feature | Detail |
|---|---|
| Style | Pollen |
| Material | Clear plastic |
| Size | 17 mm diameter |
| Function | CO2 gas dispersion with built-in bubble counter |
| Connects to | CO2 injection systems |
FAQ
How does the bubble counter work?
The built-in bubble counter allows users to monitor the rate of CO2 injection directly on the diffuser, eliminating the need for separate bubble counters on the CO2 tank or in-line.
Is the diffuser compatible with all CO2 injection systems?
The diffuser is designed to connect to standard CO2 injection systems. Compatibility may vary depending on the specific system model. Please refer to the manufacturer’s guidelines for confirmation.
What is the size of the diffuser?
The diffuser has a diameter of 17 mm.

Harry Sharp –
The bubble counter is very accurate and makes it easy to maintain a consistent CO2 level. The diffuser fits well with my existing setup and looks clean in the tank. No issues with gas flow or leaks after several months of use.
Bella Clarkson –
I appreciate the built-in counter—it saves time and reduces guesswork. The clear design allows for easy visibility. It’s a small but useful addition to my planted tank.
William Poole –
Works perfectly with my CO2 system. The bubble count is reliable and helps me adjust injection rates without needing extra tools. Simple to install and durable.