Pond Boss Forums AERATION Systems questions Double membrane difusers

Check with each supplier as to the volume of water moved per unit at depths same as you plan to locate your dual diffuser. The Vertex unit has the water volumes available. Vertex units have a special built in valving that equalizes the air flow to each diffuser making them perform better in unison than competetors. Some Vertex vendors will sell just the disk membrane and you assemble or mount the disks for a cost savings.