I am new here. I just set up my 75 gal tank almost 2 months ago. My levels are good, had a spike of ammonia with the new fish after my initial setup and did a 12% water change. That's just my back story. Well I have a blue tang who appears to be "scratching" itself on the sand at the bottom of the tank. My other fish are fine and he looks fine as well. If you have any idea on why it is acting like this, the help would be appreciated. Thanks and I'll put more information on my tank up in the noon area soon.
Andrew
Andrew