My tank has been up for about 14 months now. All of my 40 naussasrius snails have been eaten by the damn mantis thats in there that i cannot find. I still have about all 25 ceriths and about 8 or so hermits and astrae snails. Then also have a bout 10 strombellas. What else could i add that would be good for removing excess algae in the tank? I have a lot of hair alge im trying to get rid of that my tang cant keep up with. either fish or snails what would be good? thanks