Taylor asked in PetsFish · 3 years ago

How long after a copper ICH treatment can I put my invertebrate back in the fishtank?

I have a large Crayfish in my tropical tank that had an ich outbreak. The medicine told us to take out any invertebrate because it could kill them. How long do we have to keep him out of he tank?

1 Answer

  • Anonymous
    3 years ago
    Favourite answer

    First, be sure you cured the ich, which takes a couple weeks.

    Then at least 3-4 normal water changes, over a month or so, and keep replacing the carbon every few weeks for months because copper may still be present in the tank. Depending on the copper type, it may be in the tank forever; it bonds with gravel etc and will probably be released back in the water. Use Novaqua or Prime water conditioner for all new water to detoxify copper as well.

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