Solenoid valves: we must determine which nozzles will be controlled by solenoid valves (submersible or not) because this will determine the interactivity with each water jet and ultimately the dynamism of the musical fountain. Although the ideal choice is that each nozzle has its own solenoid valve, this can also be done by submersible pumps (as shown in the map of this project, due to the particular customer's choice)