<BLOCKQUOTE><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><HR>Originally posted by naesco:
<STRONG>Powder Blue tangs are almost impossible to keep although some have had sucess. Clown tangs are impossible. Achilles are really iffy.</STRONG><HR></BLOCKQUOTE>
Powder blue tangs are nowhere near impossible to keep. As with most acanthurus tangs, you need plenty of room, very clean water, low stress, and the right diet. They are hardy once established.
I personally would not keep a powder blue tang in anything less than a six foot long tank. Eight to ten feet is better for an achilles.
I keep my powder blue tang with a sailfin tang in my six foot reef. They fight seldomly. I've noticed that the powder blue will get ich if the temperature changes too rapidly, but the ich will go away once the fish calms down if your tank is healthy and its fed correctly.
I've never tried to keep an achilles, as I feel I do not have a long enough tank to accomodate it. I would want a ten footer like the guy above before I'd attempt it.