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I have some fish still gill scratching and twitching in QT. They have been through 30 days of copper, 2 weeks of Hypo, and two rounds of Prazi. A fresh water dip on one of the fish didn't reveal anything. Really nothing else to treat for at this time and I am about to move them into the display. Before I do so though I wanted to hit them with formalin just in case. Problem is I do not have another qt to drop them off in after the dip. If I go the 2 drops per gallon dosage into the QT how long do I treat for? The directions say to repeat up to 3 days. Should I do the 3 days and then repeat 7 days later?
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