i have one 3"(5 months) and is my third one that i've tried hes doing well on my 90g reef, very very agressive and ich magnet fish, he has 1 degree murder on him hehe, he killed my copperband, bellus, and an morish idol yet hes the smallest fish of all of them.
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Thanks reefy for having the courage to post your experience with the powder blue tang but please don/t attempt a 4th try.