Product review (1 stars): I know the filter has gone bad when it starts to smell
First two sets of filters lasted 2 months, then I had one in Jan 2017 that lasted 1 month. I replaced on 5th Feb and it lasted TWO weeks. There was a lot of deposit on the filter, so after washing it away, I filter lasted 2 more days. I know the filter has gone bad when it starts to smell.....smell really bad.