Quote Originally Posted by PoolDoc View Post
Suction flow over the lower blades turns the upper blades, which in turn pulls air and water through them, till the hose is primed . . . at least, that's what it looks like to me.
Yes, but I would think that the vacuum needed to pull all the air out of the hose could not be created in this manner. I understand HOW it's SUPPOSED to work. I just don't see it actually working.