Fish/Invert to eat macro algae?

[Adkins.its]

Alright so I have checked various forums on different sites and have turned up with not a lot. Does anyone know of any fish or invert that will munch on macro algae.

I have a 2 different types trying to take over my biocube. I have chaeto in my fuge and it has not spread. Just a blade type and braching one with little green balls on it. They are both rooting. I just cant figure out how to get rid of all of it. I can pull it by hand but I can only get soo much.

Please any advise helps.

 

[JCR's Reef]

I dont know of any small fish that will munch on it. I know the bigger Naso's and Sailfin's will eat calupera, along with other types but for a bio cube your best bet is to prune it out by hand which will be a pain.