Both very reasonable opinions. I know that 33 gallon is a bit unorthodox so I just didn't want another tang police fight breaking out.
Thanks for your responses guys

. I will try to add some more rock into the tank and provide more grazing foods.
BTW, whenever I clip nori in the tank, it seems that they only nip at it occasionally, but by the end of the night all the nori is gone. Could it be disintegrating in the water and just being wasted or should I take it out after a certain amount of time regardless if the fish munch on it or not?