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03-25-2007, 03:43 PM
One way to look at it is the more head you have the more pressure drop your powerhead is seeing. That means more power is going to overcoming the head rather than pumping water.
A PH that has more flow at a higher head (say 1 ft of water for example) will pump more water than one with a lower flow at that amount of head.
Tom "Bart" Simpson
"If you really want something in this life, you have to work for it - Now quiet, they're about to announce the lottery numbers!"
-- Homer Simpson
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