Folks, if you've recently upgraded or renewed your annual club membership but it's still not active, please reach out to the BOD or a moderator. The PayPal system has a slight bug which it doesn't allow it to activate the account on it's own.
It should as they just connect to the end of the air line. My skimmer, the tunze 9001 came with one and I haven't had that issue. It'll be top heavy so just rubberband it on the skimmer to keep it out of the water.