Swimming pool owners are always on the lookout for ways to save money, and one way to do that is by cleaning pool equipment regularly. One of the most important pieces of pool equipment is the cartridge filter. Pool owners should clean this filter at least once a week, but sometimes it’s necessary to clean it more often. There are a few factors that determine how often a cartridge filter needs to be cleaned. The type of filter material, the size of the filter media, and how much debris is in the water all play a role in determining when it needs to be cleaned. If your pool has an automatic filtration system, then your pool company will determine when the cartridge needs to be replaced. If you’re cleaning your own pool, then you need to check the filter every week or so and clean it as needed. ..