Hello wilber, it all starts with farm planning to ensure tanks are raised high enough to create pressure... Without enough pressure, you can't effectively irrigate. So if your irrigation water pressure reaches furthest point, same way, venturi system uses to inject the fertilizer since it's already in liquid form. So, ensure your tanks are atleast 2.5m high or if your land is sloping, you can reduce height. Hope you are answered. All the same, demonstration is needed for you to master it's simplicity. We open water first for a few seconds or a minute to create pressure, then close main supply and open venturi and you can here the sucking sound. NB... your tanks MUST HAVE WATER ENOUGH TO CREATE PRESSURE.
