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Thread: Bakki showers and cold weather climates

  1. #11
    Daihonmei MikeM's Avatar
    Join Date
    Dec 2003
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    Orlando, Florida
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    11,128
    Sunlight not needed. I cover mine with loose groundcloth to prevent leaves etc falling in. Media exposed to light becomes green-black with algae. Media shaded is a nice soft yellow-brown, indicating bacterial biofilm. Read the article Luke posted on porous media showers in sewage treatment applications. It implicitly raises a question of whether the desired bacterial activity would be inhibited by heavy algae growth on the media. I tend to think some algae is not a big deal, since algal surfaces themselves can become the site of bacterial colonies. Media under the top layer does not become algified.

  2. #12
    Jumbo Regenmeneer's Avatar
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    Jun 2005
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    Netherlands
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    751
    In fact, bacteria will do a better job in the dark.

    Regenmeneer

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