I have a copperband butterfly that's been in qt for 4 weeks now. It developed white spots on its fins. I've scraped them off with my finger. I freshwater dipped before I added it. Treated it with copper for 3 weeks, para shield, freshwater dip, then a week of instant ocean lifeguard. It's now in saltwater with no medication. It's eating live brine and black worms vigorously. A little frozen. I'm thinking it's not ich. Any ideas?