... rate:1.0%max •IntroductionManganese sand Filter is selected by natural manganese sand or manganese ore, grinding and ... sieving to various kind of manganese sand filter media. Rough appearance, brown color, can remove ... ,Woodbased Activated Carbon,Anthracite Filter Media,Walnut Shell Filter,Manganese Sand Filter,Quartz Fiter Sand,Ceramic Filter Sand,Biological Particulate Filters. For ...