Sea urchins
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revhtree
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Yes most if not all are reef safe. 
What kind you looking to get?
What kind you looking to get?
They are reef safe, but they definitely have differing visions of frag placement and aquascape. They pick up anything not glued down, and drop it where they please, if you have a glued aquascape and unmovable corals, go for it.
cdness
2006 - Present
Yes on the reef safe, No on the aquascape safe... They do move stuff around as bad or worse than turbo snails. Now if you don't mind stuff occasionally being in different spots or are attentive to a misplaced coral you should be just fine with one. I turned mine back into the pet store as it grew WAY too fast and became a bulldozer.
Brianscardoc
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Also note that the purple urchins tend to have a voracious appetite for shaving bush, kelp and georgians. Learned the hard way. LOL
Joylynn
Community Member
I have a long spine sea urchin in my tank. He does push over unattached corals but hasn't eaten any of them. He's a character but unfortunately he's about to outgrow my tank.
I almost forgot - if you put a cuttle bone (like for birds) into your tank the urchin will get its calcium from it instead of stripping it off your live rock.
I almost forgot - if you put a cuttle bone (like for birds) into your tank the urchin will get its calcium from it instead of stripping it off your live rock.
IME tuxedo urchins, collector urchins, and long spine urchins are reef safe.
Collector urchins seem to cause the most aquascape damage because they, well, collect things more than the other sp of urchins. Mine would pick up colonies of zoas and hold them for weeks or months, which was annoying but cool.
I would recommend tuxedo urchins because they are small, stay fairly small, and tend to not pick up as large of objects ime.
Collector urchins seem to cause the most aquascape damage because they, well, collect things more than the other sp of urchins. Mine would pick up colonies of zoas and hold them for weeks or months, which was annoying but cool.
I would recommend tuxedo urchins because they are small, stay fairly small, and tend to not pick up as large of objects ime.
