Dennerle Nano Bio Filter Granules Media Reactors Some cleaning animals such as

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Dennerle Nano Bio Filter Granules Media Reactors Some cleaning animals such asDennerle Nano Bio Filter Granules Dennerle Nano Bio Filter Granules Overview Premium sized biofilter granules engineered for nano aquariums; their high porosity surface supports beneficial nitrifying bacteria for crystal clear water and stable nitrogen cycling. Features of Dennerle Nano Bio Filter Granules High surface area ceramic granules for efficient biological filtration Uniform 23 mm granule size ideal for small filter systems Neutral inert