Water tank auto level system with fail safe

Water tank auto level system with fail safe , utilizing  normal plumbing parts to  crate a sensor network within a trank, with maximum and minimum  fail safe , this will utilize a ultra sound sensor to mesure the depth of the water and activate a pump then the tank is to full  , this sensor will be backed up by 2 float switches  on set at max level and one set a min level. 

The esp32 will be the barins behind this. And will also record and send water levels back to the cloud.  the system will operate at 12v so can bee run of a marine battery .