Traditional sand filters can only remove particles in the 50-100 micron range, but ClearPro technology removes particles up to five times smaller, well below what your eye can detect. When combined with our popular Tagelus sand filter, your pool will achieve 60% cleaner water than with other sand filters. However, Tagelus remains blissfully simple, requiring less maintenance than either cartridge or D.E. filters. Just an occasional backwashing with a simple turn of a valve for the clearest water, year after year.