[Demonfire]

Originally Posted by TheXtremeDude

Oh I see. Yes, it is a centrifugal pump and cannot pull water from a lower level when run inline. In order to start it must be below water level and "primed" or filled with water. Unless air can escape from the outlet, the pump will not start. When setup correctly the air bleeds out very quickly. I guess you would call it self priming. You fill the res and start the pump and the air bleeds out. I hope that is what you were looking for.

Exactly