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.
Run filter system for approximately 1 hour for every 10 degrees of outside temperature: Summer 8 to 12 hours per day, winter 4 or more hours per day. (If pool looks cloudy, run filter until pool clears- then go back to your regular schedule) How to Backwash a Sand Filter.