Should I let them spread?

[Crush Coral]

I have always kept my blue shrooms on seperate rocks and traded them into the lfs after they get covered, leaving another rock or two with a couple to do the same. I like the look of tanks with shrooms on their main rock structure but I have been afraid to give them free reign. What mainatence am I looking at if I let them spread onto the main rock?

 

[NorthReefer]

keep doing what you are doing and it should be fine. It'll be a pain when it get on big rocks and you dont want them there. You can just frag them and sell or trade people=)