Product review (5 stars): Don't wait until your light comes on
I have a GE side by side refrigerator that uses this filter.  I'm not going to review what it removes from the water, but I am going to tell you not to wait until your "Replace Water Filter" light comes on.  My refrigerator manuel states that my filter should last for about 300 - 350 gallons of water.  But I'm suppose to wait until the red filter light appears before I change the filter.  My last filter had been installed about five months before, and the red light has not flashed.  But my stream of water began to get smaller and smaller.  I thought maybe the lines were getting clogged with mildew or fungus and needed cleaning.  But I decided to go ahead and get another filter...just in case.  My before stream of water from the water dispenser was about the width of a wooden tooth pick, and it did not flow very fast.  The stream after the new filter is more like the width of a pipe cleaner, and it flows rapidly. I can't believe the filter clogged up that fast since I mainly drink bottled water.  The water from the frig is only used for ice and refilling the cats water dish.  However, it must be filtering a lot of gunk from the water to get stopped up in only five months.  Five stars for working so well.