vpreefAwesome hammer collection geoff. Next time im up in Qld i must come by and check them put in person :)
Heres a hammer i got the other day,
IMG_20121026_204954 by vpreef, on Flickr
Yes they can , Otherwise leave them grow larger , then remove , however I would get advice from Pete at Oceanarium , he has been doing this for a long time :worshipSweet will do.
Can they be easily cut off from the main colony?