@Wizzlebiz . "Morning Wizz!" Moniker is catching. LOL. Still smile.
From a simpletons mind after finally gaining some logical understanding of basic plant functions. Flushing is just denying hydro or wet sets of needed food. And just ludicrous in soil based. The nutes are already metabolized before being moved to the plant from the roots. No matter your flavor brand. All same compounds after being eaten. And still being eaten from the plants cells regardless. Longer process than starving to death. And soil is full of nutes without external inputs. My vote is no flush. I only stop feeding my soil the last week or so cause I'm flushing nutes if not. Not lants. LOL.
My 2 cents.