Sirona Spa Care Filter CleanerThe Sirona Spa Care Filter Cleaner is a liquid formula that will efficiently deep clean filters and remove contaminants such as dirt, grease, oil buildup and scale. This filter cleaner is compatible with all sanitizers including bromine, chlorine and biguanide. Use the Sirona Filter Cleaner to ensure that your filter is working as effectively as possible, and that the water is crystal clear for bathers to enjoy.