All pools will have a water pump, a filter (Cartridge or Media Filter) and some form of a sanitiser. You have various options when it comes to the sanitising of your pool, ranging from a standard chlorine fed pool (via hand or a Dosing System), salt water system (generating Chlorine), mineral system (using Magnesium etc to generate Chlorine) to “fresh water” pools (systems like Enviro Swim, Naked Pools etc). Each system has its own pro’s & con’s (initial price, running costs etc) and it really comes down to the individual’s choice. However mineral systems are fast becoming the preferred method for maintaining the water quality in pools. There are numerous mineral systems available, with the main difference being the blend and percentage of minerals like salt, magnesium, potassium etc.