Your CleverSpa Filter needs to be kept clean at all times so it can provide the best performance in keeping your spa hygienic and safe to use. A dirty or clogged Filter will not only result in unhygienic spa water, but also restricted water flow, often resulting in your CleverSpa circulation pump shutting down. Using CleverSpa Filter Cleaner soak will ensure optimum Filter performance. Deep clean your filter by soaking it in the filter at least every two weeks to get the cleanest, most relaxing spa experience you can!