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Thread: Grey sand ????

  1. #1
    Senior Member
    Join Date
    Nov 2003

    Grey sand ????

    Alright, here's a dumb question. I just setup a 125G a couple weeks
    ago, decided I wanted to drill the tank, so I drained it and removed the sand, when I was scooping the sand out, I noticed that under the top layer some of the sand was a grey color, is this something to be alarmed about? It is crushed coral sand, never seen that before and kinda curious. Thanks

  2. #2
    Senior Member mschmied's Avatar
    Join Date
    Jun 2004
    Sounds like anaerobic bacteria.

  3. #3
    liv is offline
    Former Moderator liv's Avatar
    Join Date
    Dec 2003
    ya.. probebly right, bacteria and other life forms living in your sand.
    if you put the sand back into your setup right away.. i wound't worry.. if you left it sitting there a few days.. i'd throughly rince it before putting it back into service. ( just it case the bacteria died and might cauz some spikes... just something to be carefull with.

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