The diaphragms came earlier than expected. I installed them, and they are working fine. They cost a little more than some others I saw online, but I think the HI-Blow is constructed with quality material.
Extremely happy with the HP-80 roaring kit. I’ve been using this aerator for the past 10 years for our pond. Recently the unit stopped working. I was very happy to hear Hiblow provides a repair kit.The support video made it easy to replace the worn out parts.