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- Dec 27, 2018
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Just moved my first fish, whitetail Bristletooth tang to second, sterile QT tank after copper treatment for 14 days per Hotrocks method. I want to start another batch of fish in first QT in a week or so. Can I just do a large water change or original QT tank to reduce copper and clean up the water or do I have to break down, sterilize tank and all equipment with vinegar and start over?