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Thread: SSA media filter vs bentonite

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    SSA media filter vs bentonite

    Medium SSA (m2/m3)
    Gravel-pasir, krakal 100 -200
    Plastic- bio ball 250 - 300
    Matting - kasa 300 - 400
    Foam -busa 400-500
    sumber : http://www.fishdoc.co.uk/filtration/koi4biofilter.htm
    SSA = specific surface area, atau luas permukaan media per sejumlah volume
    Dalam satuan metrik lebih mudah dibayangkan. Misalnya dalam 1 kubik gravel terdapat luas permukaan kira2 samadengan luas lapangan voli.
    Dalam hubungan dengan tempat mangkal bakteri, maka makin luas atau makin besar SSA suatu media maka makin banyak jumlah bakteri yang tinggal.

    Yang mengejutkan adalah bahwa mineral bentonit mempunya luas 800 m2 per gram (http://thehealthcaresurvivor.com/cal...toxic-residue/)

    Mengapa bisa sedemikian luas? Bayangkan kartu remi yang masih di dalam dos, luas yang tampak hanya sebatas kulit dos. Lalu isinya disebar maka akan berserakan kartu dengan luas yang berlipat-lipat.

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