My female clown, along with everyone else, has been in 1.71 to 1.88 copper power since 14 April. She occasionally flashes at the gill area on the pvc pipes. I did a freshwater dip but she still does it. I'm wondering if it could be that the theronts which are dying from copper exposure are reaching her gill tissue and irritating her? Should I go ahead and move everyone to the sterile tank for observation? I don't mean to ask a ton of questions here but this process is going really well and I don't want to screw up. You can see it in the 1:40 to 1:50 mark in the video link. The water is not as cloudy as it looks, I have the flash on because that room doesn't have good lighting.