A year and a half of reefing with no issues and finally got the parasites everyone talks about. I’m devastated and feel terrible for the fish. Does anyone know if this is ich or velvet? I put my powder brown and a railway goby in a 10-gallon hospital tank (the biggest I had on hand). Gave both a freshwater dip. Using copper power since this morning. No change. Anyone know how fast it’s supposed to work?