Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The filter light stopped working after 1 month

I bought this filter for our kitchen sink. It was working perfectly and we were very happy with it- but then 1 month later the filter indicator light blinked red.{That is in indicator to change your filter.}We couldn't believe that- since it is supposed to last longer than 1 month.A few days later- the indicator light completely stopped working.I returned the item- and I am now looking into the PUR brand.I don't know if the problem was with the indicator light itself- or with the actual filter. When the indicator light completely went out we didn't know if it was filtering the water properly.I have heard good things about PUR- but I have no idea if their faucet filters would have the same problem or not.