can you feed a powder blue tang just veggies? i ask this because i got one to replace my old tang that my old heater electrocuted. so it will sit infront of the veggie clip all day eating but when i offer mysis it maybe eats one small piece then go right back to the veggie clip. i dont get it. im assuming it knows what it needs so i didnt mess with it. so do powder blue tangs really need meaty foods in their diet?