My water softener goes through a 40lb bag in about 4-5 days. Does this sound excessive? This is well water with a high iron content. I swear if I turn the dial down even a bit my wife is on me within a couple days about the water being too hard. She's right though, I can tell too. Soap doesn't lather, tastes different, etc. I'm just tired of spending all this $$ on salt. My neighbor down the road says his goes through a 40lb bag in about a month.

That's a huge difference from mine. Is there a normal range that a softener should go through?