Hi, I have a fairly new 180 gl tank that is going through an algae phase. i am getting very thin strands of brown algae growing on the tips of some of my sps corals. I try to blow them off with a turkey baster, but it grows right back. I have metal halides and T5s. I gave away my hippo and yellow tang because they were too agressive towards other fish. i have an algae blenny, and snails and a few hermit crabs. I would like to get a tang that would eat this algae and get along with my other fish, which include anthias, lyretail angels, multibar angels, bicolor angel, leopard wrasse, clownfish, cardinalfish and a firefish. What do you recommend?