Need help, hope @Humblefish can chime in. I inherited a blue tang, clown, and hawkfish from the guy I bought my tank from. Fish were in qt for 2 weeks and then noticed tang had velvet. I did a FW dip and dosed cupramine for 3 weeks and it appeared I beat it. I put fish into freshly cycled 100gal tank and 3 days in the tang had spots on it and was flashing. Eating fine and no other symptoms. I couldn’t believe it. I didn’t thiNo it was ich and thought it was skin flukes so I dosed Prazipro in the display. I can’t tell if tang has more spots or less. I ordered coppersafe and will be putting fish back into qt but I’m thinking of doing hyposalinity on the DT to get rid of the ich in the tank. Does this sound like a solid plan? I used two copper tests during the cupramine and ensured that it was at therapeutic levels the entire time. I’ve read humblefish weigh in on cupramine before so I’m hopping the coppersafe is more effective. I’ll post photos of the tang later. Thanks in advance.