Welcome to our forum.
Just joined this blog and noticed an old post regarding the effectiveness of the "freshrain" system. I live in Alaska and have had the unit on my Hotsprings tub for 2+ years. It's been flawless. I have NEVER changed the water or added ANY chemicals in that time and my tub is flawlessly clear, the ph never changes. We love it. The original lamp is still working although the dealer recommended it be replaced at 18 months. All we ever do is clean the filter once a month. Whoever said their dealer no longer made the units available must not have known how to install properly. You might call the manufacturer direct to see if a different dealer is available.
Didn't you just post in another thread that you have had this system for 2 years ?