Suggestion Pumping system: Currently, pump measure entrance water flowrate based on amount (volume) inside reservoir. This cause permament variation in the output of the pump. Explanation: Pump output flowrate is % of the total inlet capacity. However, the unit assumed Volume of tank = flowrate, (this is not correct physics) Unfortunately, water well is only 6l/h. Result, the reservoir is always emptied faster than it can be filled. (minimum output = 1%) which with a full reservoir gives more than 18 L/h. Since reservoir empties faster than it can be replenished, We would need to constantly adjust the % output flowrate to compensate for the reservoir emptying. SOLUTION: in the current case, it would be better to forgo % of output, and simply enter a fixed Volumetric flowrate output. Ex 12 L/s. Then we would have a stable output as long as the supply can cope with it. Sorry for the long explanation.