Must have standing water, pond, spring box etc. Use cheapest hosepipe to create downhill siphon, mine is 150 feet long. Curiously I could not suck start it from below, easy now filthy minded, seriously, I did not have enough suck in me to get the water up 4feet over then dam / pond wall to get it sliding downhill. Eventually I had to suck start from above using jerry rigged (no offense to German readers - hah! ) $3.50 white gas handheld squeezy pump from Lowes to which I added and hose clamped 2x barbed male hose fittings that fit common garden hose. I had to pump from above, in pond, to get water up over the edge of pond and flowing downhill to get enough vacuum to begin siphon effect. Once siphon effect started , disconnect handheld squeezy pump(while submerged so as not to interrupt vacuum siphon suction). After that water flows ad infinitum, no moving parts. Eventually grass grows over hose and shields it a bit from frost and heavy winter freezes. It only froze up on me once this past winter when temps were in single digits, and resumed flow once thawed sufficiently. Awesome setup, and beats the crap out of hauling water. The 150 feet (3x 50 foot sections) hosepipe feeds a water trough, which in turn feeds another 400 foot hosepipe stretch in the summer down to my summer pig paddock. Easy-peasy.