Just as the pure logic would suggest it, a filter is one of the most "hardworking" parts of absolutely any given pool of any given size. Given this factor, a pool maintenance is never truly complete, until you do everything it takes to clean the pool's filter. Just so you know, there are 3 major types of pool filters: cartridge, sand, and diatomaceous earth. While there are varying maintenance procedures for each type, all require systematic cleaning depending on the type of filter...