Last week I had an out break of ich in my DT, took out my Cherub and my Flame was covered In white spots. Added him to My quarantine tank yesterday. It's a 10 gallon tank, I did the calculations for the dosage of cupramine. I planned on only giving 0.35ppm as I read angels are sensitive to copper. I planned on adding .2ml of cupramine every 24hours for 6 days until i get a 0.35ppm concentration. Woke up this morning and he was dead. Did I do something wrong? Or was he already too sick and stressed? Was .2ml too much? Should I got to .1ml for 12 days instead until it reaches a concentration of 0.35ppm?