We got a yellow tang about a week and a half ago from our LFS. We have it in our 30 gallon qt with the usual pvc piping, heater, hob filter. This tang will eat literally nothing. I have tried frozen brine, frozen mysis, frozen LRS, Rods, frozen bloodworms, live black worms, Nori on a clip, nori ripped to pieces and tossed in the tank, Nori soaked with garlic, NLS pellets, piscine pellets and piscine flake... Nothing has got its attention, not a single thing. Im at a loss of what else I could possibly try. Tested the tank to see if maybe that had something to do with it... Ammonia and nitrite are zero and nitrate no clue as I do water changes every 3 days