Ammonia level

[harlie_baby]

Sorry - I did not see this before posting. I would consider treating your other fish. (Not sure how many you have)

They have been treated as well

 

[MnFish1]

They have been treated as well

Just to be clear - I mean 30 days of copper and fallowing your tank for 45 or 76 days - depending on the protocol you want to use. (If you did not QT them upfront)