The 30 mm glass Beetle Diffuser is a pollen style CO2 diffuser that connects to CO2 injection systems to easily disperse CO2 gas into the planted aquarium. The large surface area of the 30 mm disc allows for the diffusion of large volumes of CO2 gas, making the 30 mm Beetle Diffuser an excellent choice for larger aquaria or high-growth aquaria.

Compatible with 6mm (1/4") - Standard Airline Tubing. Suction cups included.