i m very new to this hobby. i m studying the horizontal type, using the big (sewage) pvc pipes, where the reservoir is place beneath the “A” racks. i intend to start small. my questions, do my vegetables need to be submerge all the time as soon as they sit inside their netpots? For aeroponics (the ones intalled with spraying nozzle), the roots are only sprayed about 4 times a day, just to apply moisture to the roots.