Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Dont buy

This filter is Great for the most part and is way better then drinking water straight from the tap BUT as is says in the description I lets fluoride through the filtration.. Fluoride!! that is one of the most poisonous elements known to man. It is a neurological poison that destroys our basic thought synapses. Yes fluoride is in toothpaste but that is because you SPIT IT OUT.. Please don't buy this it will make water that is still bodily damaging and will cause heath issues in the future.If you don't believe the danger of Florine please look up the Wikipedia article.ThanksAl3xtec