urchin that is reef safe?

I have a pink pincushion "bulldozer"
I was getting kinda bummed that coralline wasn't growing on my back glass :/
Then I realized how well *****le was keeping everything so clean!
He doesn't bulldoze much unless you don't have your frags set. My rockwork hasn't budged but it's stacked pretty securely.
He's total entertainment tho! Tries to wear everything around the tank! Like a drag queen on a runway! lol His favorite thing besides shells, crabs, snails is the plastic scrubber pads I use for pod nests from another tank! I toss one in once a week & he goes straight for it! Puts it on & around the tank he goes! Really funny!

 

Hahaha His name is P R I C K L E but it censored it! LOL
and FYI you have to have glass for a pincushion! They will scratch up acrylic!

 

Pencil urchins are not reef safe. I would do either a Blue Tuxedo, Pincushion Urchin, Banded Longspine Urchin, Blue Spotted Longspine Urchin, Needle Pincushion Urchin, or a Red Tuxedo Urchin. Here's a link to all of these on live aquaria: Sea Urchins: Live Red, Black and Pencil Sea Urchin Species