So I have marine velvet and currently I have lost 4 fish 1 every day but now I bought a 15 gallons tank for in order to do a hospital tank. I pulled my fish out and left the invertebrates and 3 cromies in my main tank. I have understand that I need to pull the 3 cromies out but those little suckers are fast and hard to catch so will try again tomorrow. I also bought copper power and a api test kit. I added 24 ML of the copper and to me it is reading between .50 to 1.0 in the aip test kit. Did I do something wrong? Would I need to add more copper tomorrow? I am so lost and scared I might over dose this and instead of helping my fish have a fighting chance I will kill them from over dosing. I also added turbo start and temperature is set to 80 degrees