This 360m3 community run pool has an average daily bather load of about 500 swimmers, seven days a week. Originally the water treatment at the pool consisted of three 1.8m sand filters and excess back washing was required above the standard required. This resulted in a loss of thousands of litres of heated and chemically treated water every year. The problem was solved by installing six MultiCyclones, two per filter, manifolded from 110mm pipe to 63mm pipe. The results were almost instantaneous. Excessive backwashing and water loss has been virtually eliminated and maintenance is quick and easy.