The Real IPM Drip Kits are gravity-fed. The water tank and the header pipe must be set up at the top of any sloping field. Water will not move uphill unless it is pumped uphill. If the land is not sloping, the position of the header pipe and the tank may not be very important. However, a farmer should make sure that the water tank is raised at least 1.5metres above the ground level to create the water pressure needed to push the water to the end of the drip lines. This product is sold in Kenya as a package comprising of the irrigation drip kit but does not include a tank, and delivered at no extra cost to your nearest wells fargo depot.