Encrusting Palythoa aka moon polyps

[bergamer]

I have read that these can be kind of aggressive, how worried should I be if I buy it and place it in my tank?

 

[organism]

I think the sweepers can get relatively long, much like a favia, depends on the coral...

 

[nm reef]

I'd make sure there was adaquate space between it and any other corals....I've seen them extend sweepers several inchs....moderately aggressive....but many reefkeepers have had success with them in well populated tanks.