I have had 4 fish in a row die in my quarantine system and I am clueless as to why. First fish I added was a Copperband Butterfly. When I first got him he was eating frozen food like crazy and was healthier than any Copperband I have seen before. A few days later I added a Flame Fin Tomini tang. About 2 days later both fish died. There was never any signs of bullying or stress. They went from looking healthy, eating, swimming around then when I came home from work they lay there dead. Inspected both no signs of parasites or diseases.
I considered this a fluke and maybe the Tomini was ill when I got him and thus decided to try again. I changed all the filter media and dosed copper a little earlier this time around. Same purchases same timeline same result. Purchased Copperband then purchased Tomini few days later. Few days later both dead. This time the Copperband had a few spots although I'm not sure if they are related to the deaths.
Some facts about the system. 20G long, Aquamax 50 HOB filter. Temp 78. Salinity 1.023. Tank has been cycled for about 4 months now. I have successfully quarantined fish in this system previously with no issues.
I considered this a fluke and maybe the Tomini was ill when I got him and thus decided to try again. I changed all the filter media and dosed copper a little earlier this time around. Same purchases same timeline same result. Purchased Copperband then purchased Tomini few days later. Few days later both dead. This time the Copperband had a few spots although I'm not sure if they are related to the deaths.
Some facts about the system. 20G long, Aquamax 50 HOB filter. Temp 78. Salinity 1.023. Tank has been cycled for about 4 months now. I have successfully quarantined fish in this system previously with no issues.