To reefrunner69 and Hara:
Thank you both for the advice and for prompt reply. This site is the best I’ve ever seen on any subject for its members offering straightforward, prompt and expert advice. I will answer you both in this one post.
The stress idea seems to ring true. Yes, the tank is 36W x 24H x 18D. Ever since I’ve had the Achilles, he has been a “VERY" active fish. He had a loop he would rapidly swim around and around the rocks, from one end of the tank to the other, constantly. Occasionally he would turn flat-sided to the sand and brush against it. I just thought he was trying to stir up food. Would a yellow tang be has hard to keep in this tank as was the Achilles? I haven’t had much luck with those either come to think of it. The test kit I have is a Master Test Kit, manufactured my Hagen. It’s the same as my favorite LFS
uses when water samples are brought to them. I will try to have my water tested this weekend for comparison to my readings however.
Unfortunately, the size of South Florida homes lived in by average people on average income (we’re not drug runners) does not allow for setting up multiple tanks, so I did not and never have been able to quarantine new fish. Perhaps I could find room, if I can find the money, for one of the MARINELAND ECLIPSE SYSTEM 12 - 12 gallons systems. Would that work as a quarantine tank or what suggestions would you have?
I didn’t realize that anyone was still using cyanide to capture fish. What a waste! Is there any way to tell that this is being done? As you said, it could be going on when the lights went out, but I never saw any of the other residents even look cross-eyed at the Achilles. If anything, he was the tank bully. I’ve seen him chase my goby back under the rocks and that sucker's got some teeth. I know that from experience.
Again, thanks for the advice. I would very much love to keep a tang or two. They are so showy, but I will follow your advice. What other somewhat large “very colorful” possibilities could you offer?