pencil urchin in nano

[hooked]

Hello everyone,

I have had my 20L up for about 7 months. I was at my LFS and found 2 pencil urchins, total size with spines about 1 1/4 in diameter. The look really healthy. There body looks to be about the diameter of a dime. I want to add one but not sure they would be safe with corals. I have mostly star polypes, anthalia, montepora, and a couple of soft tree corals (sp? on all them). I have never seen any this small. What does everyone think about adding?

[hooked]

anybody ?

[ckreef]

One concern would be how quick they grow and then they would start causing problems by knocking into corals and maybe pushing them over into other corals wich could be disasterous.

Things like that in a Nano don't work as well as they would in a big tank.

[hooked]

Thanks for the help CK