Can you indicate with arrows the direction of flow for each pipe, and where pumps will be located?
Regarding your closed loop, that makes more sense now. Just a matter of semantics anyway.
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-Quinn
Man, n. ...His chief occupation is extermination of other animals and his own species, which, however, multiplies with such insistent rapidity as to infest the whole habitable earth, and Canada. - A. Bierce, Devil's Dictionary, 1906
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