Nano Urchins?

Musho3210

New member
Any urchins that will fit a 20 gallon, bout 25-30 pounds of live rock, corals (tightly superglued i know), sugar grade aragonite sand, and a tank upgrade to 40 gallons planned in the near future? I know about the coralline eating (which is a good thing to me) and the bulldozing (lots of superglue)

And how about a brittle star, the regular sized ones, not the micros?
 
I beleive a brittle star will be ok (but have a tendency to kick frags down and move small to medium rocks). As to the urchin, dont rely on algae in yuor tank alone! Just feed it, should be ok than.
 
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