Tangs are tough buggers he should look good as new after a few months of nori with garlic additive. I personally always use seachems garlic guard. I found it doesn't foul the water as bad as some other garlic products and gets even the really finicky eaters to eat.Yes this literally appeared overnight...so I'm definitely thinking an attack of some kind. I did do a lot of changes to the tank that day and added a fairly big torch...maybe he got a little disoriented and got tangled up in the torch or a nem. All water parameters are great except alk is a little low at 7dkh
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