Flushing doesn't do what flushers think it does according to
https://atrium.lib.uoguelph.ca/xmlu...t7iPF94NGG4A_2cPXI9GnkmgAesrtDw5YMCDKp9u7kgS4
"Flushing was found to be ineffective in removing any significant amount of nutrient from the bud."
Flushing is especially harmful for hydro growers, because it immediately deprives the plants of bud-fattening nutrients.
Soil growers' yields might suffer less from flushing, because soil can hold enough nutrients to stave off the flushing starvation.