Product review (3 stars): Worked great for 2 weeks... now is super slow 4 weeks in.
This product was amazing the first two weeks we replaced our old filter. It massively improved the water pressure/flow and filled a glass in a timely manner. However, 1 month into having the new filter it fills a glass at a snails pace (maybe 30 seconds to fill an 8-10 oz glass of water).  It would be very hard to believe we've already gone through 300 gallons as a family of 3 in less than a month. It's not cost effective to replace every month! Anyone else have this problem?