Abundant Flow Water FLX20-25SXT Filox 20 System, Black Removes highest levels of iron & sulfur from your water without chemicals or air injection! 2.0 cu. ft. system whole house application treats and cleans all your water with one tank! No more rust stains or stinky water! No chemicals, no salt, no additives. All automatic! Removes rotten egg odor, ferrous & ferric iron, and manganese, AND some levels of sediment Removes up to 15 ppm of iron, 7 ppm hydrogen sulfide, and 3 ppm manganes.