Product review (5 stars): Keeping the peice!
I dunno, it's a water filter for a refridgerator, when the light turns red you replace the filter, then it stays green for awhile, when it turns red again, you replace it again, and you repeat this as many times as your fridge is good for. Does it do anything or make a difference? Not that I can tell, my ice cubes or well water seem to taste the same with or without the filter! I just change it to keep the other half happy, we can't be havin no red lights on in the fridge now can we!