You don’t think you could stop the cycle reset by pulling him right away. Similar to TTM? Interrupting the cycle since we know it takes 3-7 days for a tomont to drop off?Adding even 1 fish back to the display tank and have it show ick would re-start the fallow clock ( active ick infection) and then you also have a fish that would need a new clean quarantine tank for just that fish for a 30 day copper. If you put it back with the others, they would all have to go through a 30 day copper treatment.