I have an existing water supply system for the cattle on my farm whereby 6 troughs located in different fields are all fed from a common header line. The pressure in that line ranges from 3-5 bar (It’s well water supplied from a submersible pump). Water is supplied to each trough based on the water levels using a mechanical ball-cock system. Currently I need to visit each of those 6 troughs each day to manually add a liquid mineral solution (to provide extra nutrients to the cattle at this time of year). That solution comes in the form of plastic drum. Currently I distribute about 350ml of that solution in total daily which covers 60 cows
I would like to automate this process in some way so that I can feed the solution directly into the header line. What would be the best way of doing this to control the supply of the nutrient solution? I only want to add the solution when there is flow in the header line.