Hey,
Very nice!
Mine have spread up the glass and onto my overflow box. I hope I never have to tear the tank down or replace the overflow. I suppose it might be possible to scrape right along the glass and take the coralline and zoo's out together. I've given lots of frags away since they spead so fast. I've got a pretty good spread going on my star polyps too. I agree with you though that the zoo's look better. (I just like the movement of the star polyps blowing in the current.)
Dan'l