Well to continue poking fun at Tony, you could purchase a skittish tang, but there is no guarantee he will eat caulerpa. Similarly, rabbitfish are supposedly big algae fans. My tang is also too good for algae, although my problem is Dictyota sp. and Sargassum sp., not Caulerpa sp. Blennies, sea urchins would also be something to research.
Personally I just pull algae by hand and I am slowly gaining the edge. Although the other night I let too much go down my overflow, thereby plugging it, and it was a problem when I realized that more water was coming up my return than was going down the overflow...
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-Quinn
Man, n. ...His chief occupation is extermination of other animals and his own species, which, however, multiplies with such insistent rapidity as to infest the whole habitable earth, and Canada. - A. Bierce, Devil's Dictionary, 1906
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