Weatherman, sorry you took offense to the first response. However, I tend to agree with the info it contains. Healthy fish do not repeatedly die in a tank that has perfect conditions. That means either the fish was not healthy, acclimation was not adequate, or the conditions were not perfect. I do not wish to imply that your tank is not in great shape, but I have never had a tank with perfect conditions. I think that probably everyone (even the "tanks of the month" owners} probably feels that they have one or two parameters that are never quite where they would like them, even if there seem to be no problems with any livestock. Zero reading for ammonia, nitrite, nitrate do not insure that phosphates, calcium, magnesium, or many others are not perfect. More information can help a lot. What chemical tests were done, what were the results, what brand of test kits were used? While all of your other delicate creatures are thriving, what species are they, and how long have you had them? Has anything at all struggled for a period, even if it recovered? Which of the blue tang species have you bought? Powder Blues have a reputation for doing poorly, but some people are successful. Many people do well with the Regal/Hippo Tangs. Did you quarantine the fish, and for how long? Did it die in the quarantine tank? Did it ever start eating? I think there are a lot of people that would like you to help you so that you do not continue to lose these fish. It might be better to spend more time on trying to identify the cause than just buying another fish right after one has dies. I wish you and the fish luck.
