A Free Energy Water Pump from 'Learn for Life' is tested. Supposedly it can pump water nonstop without electricity.
Here is another video that also tests free energy water pumps using a slightly different setup. So if you are still sceptical, check it out:    • FREE ENERGY Water Pump FULLY EXPLAINE...  

For more information on water supply check out our other videos or visit our website.
https://www.wot.utwente.nl/en/