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Originally Posted by MaxxxRacer
here is a point to think about. when the water gets to the res in the system the pump is no longer forcing the water out of the res, but is sucking the water out of it. if it was pushing it through the res rather than sucking it out, the res would be completely full all the time. if i open the top on my res the res doenst overflow and that is becuase the water that is flowing out of the res is being SUCKED out by the pump. NOT being PUSHED out. Granted since i have my res above the pump gravity would take effect if i unhooked the pump, but u dont exactly get alot of flow using gravity.
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Pumps dont suck, they create an area of low pressure with the impeller that draws more water into it, thus the need to prime them. If they could suck then u wouldnt need to feed them water before you started it to get it to work.
Read the part about Centrifugal Pumps cause that is what a pond (made for comp) pump is.
http://www.powerandmotoryacht.com/ma...mer/index.html