UV systems on an outdoor pool are like using a hose to add water to the Tennessee River: the amount of UV the system adds is a fraction of what the pool already gets from sunlight!
Granted, some UV systems add UV in a different wavelength than the majority of solar UV . . . but that doesn't change the fundamental fact: pool UV systems have no useful function on outdoor residential pools EXCEPT to improve dealer profits.
. . . membership updated.
(Search the forum here: http://pool9.net/search/
Bookmarks