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river stones

  1. River Stones and GH / KH

    Beginner Freshwater Aquarium
    I just added about fourteen medium sized river stones to my 20-gal tank. I don't know precisely what types of stone they are. Bought them at my LFS. They were packaged and labeled as river stones for ponds and planters. They appear tumbled... rounded and very smooth. I doused them with...
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