If you have visible iron, most of the iron is not soluble, so won't be removed effectively with a softener. There are basically two ways to handle the problem of iron (soluble and insoluble). Oxygenate the iron to insoluble form, and filter, or remove through exchange using ion exchange resin (removes mainly just the soluble form). Using the greensand filter suggested above, regenerated with KMNO4 is one way to remove all iron. using a filox material in place of greensand will also work. Another is to set up a periodic down hole chlorination, and filter using standard sand filter (backwashable kind like they use on a swimming pool will remove most of it) and then you could polish this with a softener to remove the small amount of soluble iron left. You have extremely soft water so using a softener for removal will be very efficient, add very little Na to the water, and will likely only need regeneration very infrequently. When i lived in IN. I had a house well that had 2-3 ppm iron. i added a gallon of bleach down the well every 6 months or so, turned on the water hose and let it run back down the well to mix and blend the bleach, then let it run to the ground till the chlorine smell disappated. that plus a softener was all I ever needed to keep the wife happy with her whites.
Mike
