Changes

Elephant pump

130 bytes added, 22:36, 6 September 2013
Construction, operation and maintenance
{{#ev:youtube|D_GWEESaESQ|200|auto|<center><font size="2">Pump Aid - How to<br>build an Elephant pump</font></center>}}
 
 
 
[[File:elephant pump diagram2.jpg|thumb|none|600px|Diagram: [http://www.aquaidwatercoolers.co.uk/the-elephant-pump Aqua Aid]]]
==Costs==
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