Have him in Qt and using cupramine. He had a few ich spots and I Qt/treat all new fish anyway. I Test copper with a Hana checker every few days. Fell from .54 to .40 in two days. Do I have to start my 14 days over? I’m 8 days into it and he is starting to show HLLE. I’m really upset about it. I hate to keep him in copper any longer than necessary. My Desjardini looks horrible after Copper but I went 30 days per the sticky QT tread. From now on its 14 and transfer to a clean tank. Live and learn.
