I have a lobophylia algae problem and hear that naso's will eat this pretty regularly - I am thinking about trying this but have a few questions - are naso's very aggressive or territorial? I already have three tangs in the tank - a small yellow tang, a small sohal and a medium sized (5 inches or so) redsea sailfin - my tank is 225 gallons - is that too much tang for my space and am I pushing my luck on mixing all these tang species? they all get a long fairly well at this point (and were added sequentially rather than all at once)