Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Trickle trickle

Worked great for about 3 weeks, then the flow got painfully slow. It was literally filling our water pitcher drop by drop by the time we hit 4 weeks. The unit itself seemed be fine, when I removed the filter and turned on the tap, the water sprayed out the appropriate hole fine. We were told by Brita customer service that the filter probably got loaded down with particles that it filtered out of the water, so we changed the filter after 1 month. Now about 2 weeks later, we're starting to see the slow down again and we don't have heavy tap water. The system is good, but the filters aren't and it would be way too expensive to have to replace them every month. I never had that problem with the pitcher!