Instruct: Classify Amazon reviews into positive or negative sentiment
Query: What a disappointment!

I have not blindly chosen just any faucet filter since I've carefully read through many reviews and many more different types of products. Sure Culligan Faucet Filter got many good reviews, but it fell short of all expectations in my case. The filter worked decently the first week (though the water was never really clean); the little knob on the side soon got stuck, preventing the water from switching back to normal mode in just a few days. On top of that, the water pressure was never very fast to begin with, but after just a week, the water seems to be even slower than normal, and is pretty much "leaking" out from the faucet rather than pouring out. I tried everything I could with twisting/moving the filter inside around, but no help. So much for the filter lasting about 2 months.This product is a disappointment! I suggest that you do more research before you decide on this product.