We have a Kenmore iron filter model 625-349224 and softener model 625-388400. Iron is quite evident even though we backflush 4 times a week. The iron filter is 7 years old, when do we need to change the minerals? Thank you.
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We have a Kenmore iron filter model 625-349224 and softener model 625-388400. Iron is quite evident even though we backflush 4 times a week. The iron filter is 7 years old, when do we need to change the minerals? Thank you.
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