Thanks for the links. I guess I'm being paranoid about the first 3 days. Knowing that ich can drop off the fish and encyst in that timeframe before I had the chance to add CP to kill them as they were dropping off the fish. Those first generation can then take up to 72 days to hatch. CP is only dosed for 30 days and then removed. Will ich rear itself afterwards during the observation period? BTW display tank will remain fallow. I know I can do TTM, but that failed the first time around since I didn't follow the 10 foot proximity rule. I convinced my other half to let me buy a dedicated QT tank and put in the spare bedroom, on the other side of the house, with the condition that I get rid of any other fish tanks in the house besides the main tank of course. So no spare tanks to transfer them to or to do another round of ttm.