The filter is the hardest worked piece of equipment on your swimming pool or spa. Pool filters and Spa filters work round-the-clock to filter impurities so you can enjoy pure water. You'll want a durable pool or spa filter that will remove even the smallest debris and sediments from your water. Here is some helpful advice to assist you in selecting a swimming pool filter or spa filter.
The rapid sand filter or rapid gravity filter is a type of filter used in water purification and is commonly used in municipal drinking water facilities as part of a multiple-stage treatment system.Rapid sand filters were first used in the United States in 1896 and were widely used in large municipal water systems by the 1920s, because they require smaller land areas compared to slow sand filters.
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