Matala Air Discs are designed for fish ponds all the way up to the wastewater treatment industry. The air pore size in the rubber membrane is designed to give a medium size bubble which will not put any significant back pressure on the system. The 3/4" male thread makes it easy to attach to your feed line.

The 12" disc is capable of safely handling air flows of 25 - 200 LPM. Ideal 120-160 LPM recommended.