I received this about 2 weeks ago and so far I have had great results
I just put it in a few days ago and it seems to be doing its job. I am keeping an ey on it daily
Even my skeptical girlfriend is amazed at how well these work just a few weeks in. In a house where it only takes a few days to begin to see accumulation, we have seen no more buildup or mineralization. The four pack was worth it, but I was surprised to see no pumice stones with my order.

