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![Passive water pump](https://farmhack.org/sites/default/files/cappieswaterpump.png)
Passive water pump
Wirtz pump, passive water pump. Paddle wheel pump on open water irrigation ditch fills elevated 500 gallon water tank which then gravity irrigates greenhouse.
Wirtz pump, passive water pump. Paddle wheel pump on open water irrigation ditch fills elevated 500 gallon water tank which then gravity irrigates greenhouse.