Product review (3 stars): Not up to it for very high mineral content
Unfortunately I have very hard water, and after a few days there is enough scale and stiffness to literally block off some of the filter. Which caused the filter to lose effectiveness. I sort of 'broke the crust' and restored some of the ability of the filter (as evidenced by regaining a few points on the humidity level in house) but. I purchased another and plan on giving this one a bit of a soak in something to see if I can demineralize it; and I am looking into a whole house filter to improve my water quality.