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  1. #1

    oily looking water

    changed my media from alfragrog to ceramic this spring and my water looks oily on top whilst running waterfall return [ 12000litres ]
    any ideas guys

    clear when still. how do i clear biofilm done a 70% water change looking better but still there. [ any think i can treat it with ]

    Last edited by whiskey1944; 05-06-2024 at 10:49 PM.

  2. #2
    I just had this on a new build pond (only 5000l). Everything was new so guess it was some releasing agent from all the plastics and rubber liner.

    I just did a couple of water changes via the skimmer line and ran direct to waste.



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