Make the water you play in SO clean it virtually disappears! Revitalize your water! Clean Swim Filters have been developed by a doctor to solve poor water quality and clarity in his own swimming pool and salt water aquarium. Twenty years of research and development has led to the design of this superior product line. Our filters use pharmaceutical and medical grade one-micron construction which removes contaminants that other name brand filters allow to easily pass through and re-enter your kiddie pool, swim/spa, hot tube or aquarium. Easy to use with amazing results. Make your water crystal clear!