Blue Tuxedo Urchin in Nano Tank?

Hey everyone!

I would really like to get some advice! I'm thinking of getting a blue tuxedo urchin, since its one of my most favourite reef inverts. I got coralline algae, brown algae that grows occasionally on the glass, aswell as some extra macroalgae in my refugium. So i dont think it will starve. Although, i've researched alot about these little fellas, and found out they get rather large when they get older. They might actually get so big, that they can tumble over rocks :O That sentence makes me scared. So, do you guys have any experience with keeping these urchins in nanos? Mine is 20 gallons btw!

 

I do not see any issue. It may munch on your coralline. Personally I have never had one move rock structures. Your rocks should be stable enough that an urchin could not move them anyway. Now they will knock over corals and carry some around.

 

Ok, thanks for the help! I'm definitely considering to buy one!