I have also seen it from carbon. Many years ago a dusty carbon caused some lateral line in my sailfin. Talked with several experienced aquarists that had seen the same thing.
I stopped using that brand and went back to Black Diamond and never a problem again.
I also like the spirolina advice. IMO, best food there is for tangs in general. Esp. if they wont eat nori at the start. They will eventually figure out how to eat the nori.
And as mentioned soak the spirolina in something like Selcon or Boyds Vita-Chem
__________________
Doug
|