I currently have the following 3 fish in my QT banana wrasse , male lyre tail anthias and a mcoskers flasher wrasse. I reached 1.77 ppm over a five day period. Am I safe to stay at that level for prophylactic treatment of ich and velvet. I am asking because I saw that humblefish his/her treatment updated his range. I want to make sure the copper is effective where I currently stand.