Truth is that it is hard to deprogram someone that has been dazzled by the snake oil sold by UV/Ozone and mineral system makers. What they want is for you to buy consumables at $400 plus/season. These products are sold primarily with new pools with low chlorine requirements and when you don't use enough chlorine because you believe the hype you will probably be ok for a year or 2. By the time you realize you've been had, your pool is unsanitary and you've spent a lot of unrecoverable money only to find out all you needed to do was increase your chlorine by a point or 2. The strength is convincing marks that chlorine is the enemy. They also lie. I am on a FaceBook UV/Ozone group just to monitor and am appalled at the outright lies. They frequently tell people that "those guys on TFP tell people to use so much chlorine that you're asking for problems". If you have to lie to sell your product, that says a lot.