Pre Harvest Lockout with Flush?

I am finishing up some plants and I was doing some thinking and I need to see if I am missing something really obvious. In a inert substrate could there be there any additional benefit to a flush with an semi-extreme PH to cause nute lockout? If there is any information that I need to include hit me back. Thanks.

Wouldn't a nute lock-out prevent the purpose of a flush anyway? I mean the flush is supposed to fill the plant with straight H2O and help push-out the nutes we add during it's life. Those are just my $0.02

Ya. The idea was to lock out the nutes so that it would only uptake the h2o.

Correct me if i am wrong, but Unless your nutes are in the soil it would not be beneficial. The point of a flush at least in hydro, aero, bubble is to make the plant use up the last of the nutrients it has inside of it already as well as flush it clean so when you smoke the plant you are not smoking chemicals...

I don't think I am being clear enough. The flush puts clean water with no nutes on your plants. They don't uptake nutes because there are none in the water. The plant then uses what it has stored. The idea that I am suggesting involves simply adjusting your PH to a range that the plants will not absorb nutrients and therefore use its stored fuel. It was just less work and I wanted to know if it would stop absorbing water as well or what problems I would run into. I am using inert substrate that does store some nutes. Thanks.

I am not convinced that flushing is necessary at all. plants arent flushed in nature, you just pick the fruit when they are ripe.