Seachem Glass Bubble Counting Spiral CO2 Diffuser

For aquariums up to 75 L-190 L (20-50 US gallons) Large surface area of diffuser disc ideal for high volumes of CO 2 gas Built in bubble counter makes the use of a separate bubble counter unnecessary Simple and easy to use The Seachem Spiral Bubble Counting Diffuser is a pollen style CO 2 diffuser that connects to CO 2 injection systems to easily disperse CO 2 gas into the planted aquarium. The built-in spiral bubble counter allows for easy monitoring of the rate of CO 2 injection. The inclusion of a bubble counter in the diffuser makes the use of a bubble counter on the CO 2 tank or in-line unnecessary. The Spiral Bubble Counting Diffuser has a 30 mm disc.