The following are characteristics of Modernism: 1  Marked by a strong and intentional break with tradition. 2  Belief that the world is created in the act of perceiving it; that is, the world is what we say it is. 3  There is no such thing as absolute truth.  No connection with history or institutions.
Pool filter cartridges can run for about 2,000 hours for a filter pump. Usually filter cartridges have to be replaced once every 1 or 2 years. The life of the filter will be less if you enter the pool with suntan lotion, deodorants, mousse, styling gels, and other damaging chemicals.
If you have a sand filter, it could take a week or more for the pool to completely clear. That's even if it's a good working sand filter. A cartridge filter must have a good cartridge and be cleaned DAILY if your pool is cloudy, until the pool is clear. A cartridge can only handle so much.