Product review (4 stars): product substitution
i used this product for several years with good results.  However, the last order I received didn't last long before water started to run very slowly.  I was told this could have been caused by damage in shipping.  The Ecolife rep I spoke with said they came out with an new product that she would recommend.  Its the Waterdrop MWF.  Just ordered, will review at a later date.