Passive water pump

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Stage: 
Prototype
Description: 
Wirtz pump, passive water pump. Paddle wheel pump on open water irrigation ditch fills elevated 500 gallon water tank which then gravity irrigates greenhouse.
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Video: 
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Detailed description of design, construction, materials here: http://vimeo.com/26307419 (link is external)
Additional notes here: https://farmhack.org/content/farmhack-projects-paddlewheel-powered-pump

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