Without this vital piece of equipment your pool water will never reach the crystal clear water we all expect in a swimming pool. Not exactly fun for swimming in?
There are 2 types of pool filter: Sand Filters & Cartridge Filters.
Cardridge filters use a cardridge to filter the water. The cardridge needs to be manually cleaned on a regular basis.
Norsup recommends the installation of a sand filter, especially for larger pools. Sand filters are filled with sand filter media and your pool pump forces pool water through this media which removes dirt before entering back into your pool. Sand filters need to be cleaned by a process known as backwashing where the media is agitated and dirt lifts out of the media and can be flushed through to waste. Backwashing times vary but it is a good idea to get into a regular cycle of backwashing at least every 2 to 6 weeks.
As well as sand you can also use glass filter media. By using glass, backwashing can be done faster and more efficiently, meaning less water loss and less maintenance. Glass is also less prone to channeling than sand and therefore needs changing less frequently.
Filters are often also combined with a pump on its own tray which is known as a filter set.