[Jewelry making - Article 00869] - Re: [Orchid] Problems with jewellery in fishtanks

[andy cooperman]

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    As a rule of thumb, I'd stay away from most soluble metals in a
    fresh or salt water aquarium, especially iron (steel), copper, etc. 

    That being said,  copper sulphate solution was (maybe still is) one
    of the old standby treatments for fish disease in salt water
    aquaria. It was used to treat parasites such as saltwater "ich" and
    "velvet" (oodinium), without harming the fish.  It worked wonderfully
    w/ one major caveat: it was deadly to invertabrates, such as those
    found in reef tanks, including crabs, clams, shrimp, sea anemones and
    urchins, corals, etc.  (This is why sea going ship and boat hulls
    were painted w/ a copper based coating: deadly to barnacles, sea
    worms, etc.) 

    If a fresh water aquarium contains freshwater inverts such as
    crayfish, red fiddler crabs, etc., and there is significant soluble
    copper present, they will die. 

    Also:  if a piece is hollow, make sure that is pickle free.  Sparex,
    etc. might readjust the ph down and out of the comfort range of
    certain fish. Old pickle also contains copper. 

    Good luck, sounds like an interesting project. 

Andy

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