54pcs 3.8 Inch Aquarium Ceramic Bio Filter Media,Ceramic Bio Media Blocks for Fish Tank and Koi Pond

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About This The aquarium bio filter media is made of with porous ore, rich minerals and fine porous volcanic ash refined. Ceramic media covered with thousands of porous tiny holes p rovides large surface area. Highly porous ceramic material produces both mechanical and filtration, Balance PH value and adsorb impurities Crack into pieces to any size needed, great for used in freshwater aquariums, planted aquariums, sumps and ponds. Each Box: 54 Pcs, Media size: 3.8 x 1 x 1 Inch Show more