What's a good star and urchin for a 20G?

[dntx5b9]

I posted this in the invert section, but this is a beginner question, so here it is.

I have a 4 months old 20 G FOWLR setup. I have a clean up crew, 3 fish, a condy anemone, a feather duster, and coral banded shrimp. I want to add a star and a urchin. What would be good candidates? Thanks!

 

[JonnyD91]

Tuxedo urchin is the only one i would get they are the least distructive and least likely to munch on coraline. however they will all eat the coraline. As for the stars i dunno.

 

[Entropy]

I would not add any stars. Your tank is too small IMO and it will just end up starving. A tuxedo urchin would probably work in your tank, but it will eat all of your coralline and may damage your tank if it is acrylic.

 

[dntx5b9]

Would tuxedo urchin eat green hair algae? If not, is there anything that I can add to the tank that would each the green hair algae?

 

[JENnKerry]

Being primarily herbivores, I would think so.