I'm not sure our water is THAT complicated or these filters are THAT expensive. It seems to be the best filter we've used as it does its job well, but nothing seems to last as long as they promote. Our water is high in iron and this filter does most of the work well, but the filter seems to need replacing a lot sooner (45 days) than longer (90 days) than they suggest. Probably works best after about a month/filter.
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