I know what you mean,been putting up with it for 14 years now or so,,we don't buy anything white really anymores,no need,,that iron out powder is nasty stuff,,we just use an iron out tablet in tolit,,that helps there,,,talked to a water guy,,[salesman],,he didn't convince me that after spending 3,000 or so I would be happy,so never did buy any kind of treatment machine,,,would spend that money if something would work,,but from everybody I've talked to they end up like you say yours is working.
Other than drilling another well,,don't think there is much we can do. We have plenty of water though,,and just put a new pump in after over 14 years,so,,,could be worse,,,tell your wife that you are tired of it too,and she should save her money and get another well drilled,,thats what I told mine,,,course the honeymoon was over,,lets see,,oh thats right,we never had one,,,,,thingy