A clean and functioning filter is key to an operational filtration system, as it catches and removes dirt and debris, keeping the water clean and free of impurities. We recommend rinsing the filter every two weeks with fresh water from the hose or kitchen sink. You can also use this time to spray it down with a filter cleaner and then continue to rinse. Filter cleaning nozzles are available that can be attached to the end of a hose, which can help water to better reach the nooks and crannies of your filter. Soak your filter overnight in a bucket filled with water and a small amount of filter cleaner every two months to remove deep-down debris. We recommend replacing your hot tub filter annually to ensure a fully-functional filtration system.