Jardin Outlet Compact Clear Glass CO2 Diffuser for Aquarium, 20mm
High-quality, optimum diffusion effect. Fit for small size tank. The glass diffuser should be affixed on the bottom of aquarium, for getting the best CO2 dissolve effect. When install glass diffuser, please be careful, don't over-force and suggest to use soft tube, to avoid breaking the glass diffuser and caused damage.