Matala Hakko Medium Bubble Air Disc Diffusers White Like most types of mechanical/biological

Like most types of mechanical/biological filters

Regular use provides increased efficiency of filtration and helps keep water odor-free and clear

Designed for external use with saltwater or freshwater aquariums

each ounce treats 188 gallons

Matala Hakko Medium Bubble Air Disc Diffusers White Like most types of mechanical/biologicalMatala Air Disc Diffusers feature medium sized holes in the rubber membrane to produce medium bubbles. Originally designed for the wastewater treatment industry, and thus conform to very high standards. The larger air pore size which contributes less than 6" of water depth back pressure. The 3 4" male thread makes it easy to attach to your feed line. Maintenance The disc is very low maintenance and in some cases NO maintenance. Simply wash the disc