Christi good call on the Nori at the local asian shop I have had friends pay double the price if not more at
LFS. My Powder Blue and Purple both were my favorite fish until I had to take my last reef down. I had both for 4 years, just feed them well and give them plenty of swimming room. I think most who have kept PBT or Purples that ended up with problems came from a bad fish to start with. (Thanks to many
LFS!), I agree with Amphibious great diet and all should be well, healthy fish will fend off ICK. Oh, by the way their other tank mate was a Clown tang that ate out of my hand. All were in a 120 gallon tank,
BTW all three are still alive in other tanks.
Now if I can just get my friends to give me my fish back!