So, I have two 45 gallon QT's for fish. One is for copper and the other for PraziPro then observation and further medication as needed. I have just moved my current fish from the copper tank to the PraziPro tank leaving the copper tank empty for new fish. What do I need to do before adding new fish? Do I do a 50% water change or do I need to do more? Do I empty it completely? Do I need to clean the tank itself?
Any advice is greatly appreciated. Thanks in advance!
Any advice is greatly appreciated. Thanks in advance!

