Thanks EMS503 for promting me to give a status update. I should have done this earlier but quite frankly I forgot about this thread.
My PBT is doing well. Its still a bit to skinny for my tastes as I can see the bone structure of the spine and ribs but I am working on fattening him up.
I feed about a 2" square of seaweed sheet daily soaked in selcon. The tang attacks the seaweed within minutes of me putting it in the tank. I have an excess of other algae in the tank due to the lack of snails and the PBT seems to pick at that thru out the day.
Here is a recent photo. You can see its still a bit thin but getting some body mass behind the fins.