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 27 mm disc allows for the diffusion of large volumes of CO₂ gas, making the 27 mm Beetle Diffuser an excellent choice for mid-sized aquaria or higher-growth aquaria.

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