Best and worst live rock hitchikers

[Spare time]

I am setting up a nano tank with no fish and just soft corals. I am thinking of getting either a tiny cup of real live sand or a small thing of ocean rock. I was curious what you all found to be the most neat and the most annoying critters that came on your live rock. By live rock, I mean aquacultured live rock.

 

[bnord]

Fair of golf coast or Keys live rock. And most of the hitchhikers you’ll end up enjoying. However occasionally you have to pull one out