How do you hook up a hand pushed water pump to an existing well? Or can you? Or how would I hook up a hand water pump to an existing water reservoir tank that also has a pump in it? Both the well and the spring fed reservoir tank are currently on electricity and both feed into the house (and into separate pressure pumps / and then the spring water is used for outside in gardens and barn and well water for inside house). I want to put the spring fed reservoir on a hand pump for when the power is out. Does anyone know of any online instructions for how to do this? Thank you very much.