$19.90
Alumnia Stone Diffusers produce the finest bubbles possible. Per surface area, you can not obtain better aeration than these diffusers provide. They are strong and self weighted. They can be cleaned with chlorine or muriatic acid. HD Glass Stone diffusers come with a standard 3/8" barb fitting along with a stainless steel hose clamp.
Recommended Airflow
6 inch= .6 CFM
9 Inch= .75 CFM
12 inch= 1 CFM