"victor" wrote in message
oups.com...

Copper - 0 ppm
Iron - 0.3 ppm
^^^^^^^^^^^^^^^
This is enough to color deposits.

Nitrate - 5 ppm
Nitrite - 0.5 ppm
Chlorine - 0.5ppm
pH - 6.5
Alkalinity - 240ppm
Hardness - 25 grains / 420ppm
^^^^^^^^^^^^^^^^^^^^^^^^^^

That's pretty hard. It doesn't take a lot of iron to create visible
coloration and the hardness minerals contribute to incorporating it into a
film.

I've been told by Eco Lindsay that we don't need an iron filter

A water softener can deal with this small amount of iron. Using an iron
removal salt or periodically regenerating with Iron Out or Rust Raze will
prolong the life of the media.