Product review (5 stars): Great product, mediocre service but easy and inexpensive fix for that
Like most other reviewers here the product worked perfectly for us.  Completely eliminated cloudy and spotted dish issue.

Like many reviewers here, we were given the run-around when ordering replacement filters.  Order was supposed to have been shipped only later to find out it didn't, but will for sure next week, and the week after, and the week after.

Since the filters can be opened, I took a peek inside and discovered that they were filled with the same ion exchange resin that whole house water softeners use.  These resins are DESIGNED to be re-charged.  Re-charging is simple.  Fill a 2 Litre pitcher or juice container with warm water.  Add in a cup of table salt and stir to dissolve.  Dump in the resin ( they are tiny beads ) from the filter into the pitcher and stir.  I leave the resin in the saline liquid for about an hour, giving it a stir every 10 minutes or so.  Now, put the empty filter container in the sink and slowly pour the pitcher into the filter.  The water will drain out at the bottom.  Finally make sure the threads at the top of the filter body are completely clean, pop the fibre filter back on the top, and then screw the top back on.

The added bonus is that this re-charge lasts twice as long as an original filter.  We needed to change new filters monthly, but we usually go well over two months with a re-charged filter.

You lose a bit of resin each time you go through this process, but if you bought a couple of filters ( we have eight ) you can always top it up.  Replacement water softener ion exchange resin is easy to source.  You can even find it here on amazon.