Crystal Quest® provides an array of over 20 filtration medias to suit any specific contaminant removal in addition to our own special Eagle Redox Alloys® and house-blends such as Eagle® Multimedia & Smart Multimedia. Our medias reduce & remove impurities in tap water such as iron, mercury, copper, nickel, chromium, cadmium, aluminum, lead, hydrogen sulfide & other dissolved metals, while also inhibiting bacterial growth, algae, fungi, scale & microorganisms.