Comparing Fleck 7000 with 5000SXT http://waterpurification.pentair.com/en-US/product/fleck/
http://waterpurification.pentair.com/en-US/product/fleck/proflosxt/ says 5000SXT has "Soft water refill for a cleaner brine tank". Do most other controllers use untreated water for brine fill?
http://waterpurification.pentair.com/en-US/product/fleck/proflosxt/ says 5000SXT has "Soft water refill for a cleaner brine tank". Do most other controllers use untreated water for brine fill?