Hi, I purchased a 6.5" blue tang with HLLE and a 5.5" sail-fin tang that were in a 4' tank. I brought them home and set them in my 125 gal 6' tank. And I'm having a hard time with the blue tang it looks like he'll eat a pellet or two once a day or sometimes 1 or 2 pieces of mysid shrimp. I have...