What's the gunk in the overflow and sump?

Discussion in 'Filters, Pumps, etc..' started by LCP136, Jan 18, 2009.

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  1. RHorton

    RHorton Pajama Cardinal

    Joined:
    May 11, 2007
    Messages:
    1,407
    Location:
    upstate NY
    I get allot of it in my sump also.As long as my return pump doesn't get all gunked up I leave it.
     
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  3. LCP136

    LCP136 Sailfin Tang

    Joined:
    Aug 9, 2008
    Messages:
    1,722
    I think it's actually a good thing. As far as I can tell its just an amphipod breeding ground.