Product review (3 stars): Clogged up filter!
First installed this in early April.  Worked great for about 2 weeks and then the water pressure started to decrease.  By the end of the 3rd week I was about ready to throw it away and install a new one.  When I took the old one out I decided to empty all the water out and see if it made a difference.  I replaced it and tested it out and to my surprise the water pressure was as new.  I'll wait awhile to see if it keeps working or if this was only a temporary fix.  I'll update the review at the end of may.
Per my promise to update this review this is what happened.  The filter has been fine since I unclogged it.  If any thing goes wrong on my next filter, I'll update it again,