melypr1985
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The cycle done has to pass from ammonia to nitrite then nitrate. Are you agree me about that?
Let me tell you this, doesn't matter how much water change, nitrite still staying HIGH over night and fishes can not handle that.
I'm done with this conversation. Your obviously arguing for the sake of arguing. If the OP want's to read the links I provided they will explain how to QT properly and his other options if he should choose to just live with ick in his tank.