This Matala 12" diameter membrane diffuser (AD12) is a great alternative to airstones in many aeration applications.
It contains hundreds of "I" slots that open as air pressure builds inside of the diffuser- providing uniform bubble distribution.
Capable of handling air flows of 25 lpm to 160 lpm.
Diffuser has a 3/4" male thread inlet.
The disc is very low maintenance, wash with water and bleach as needed.