I have a couple wrasses where their eyes are cloudy and I want to treat them. I have a qt tank setup with copper but wanted to know if I can add kanaplex with it or do I need to remove the copper first then add kanaplex. Thanks
Its hard to remove real copper traces. I would just buy another cheap 20 gal tank put some clean pvc in there for the wrasses to hide. Run a small filter and treat with clean water and med. This way you can use each qt for different purposes.