Gary's "trick" and how effective is Iron Out?

[LLigetfa]

And yet it's you that doesn't understand that my shutting off the power while in the brine draw cycle after a specific length of time, leaves some fresh IO solution and brine in the "brine well" as you call the salt tank, where dittohead Alan has you sucking it all out of the "brine well" at once...

LOL There you go again with vague instructions, deliberately so that you can later claim that we didn't follow them to a T. What is the point of stopping the draw and rinsing out the Iron Out right away rather than giving it some contact time to work?