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#6
02-18-2010, 02:01 AM
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I tend to think of urchins as the "hey neato!" critter in the tank. Mine eats mostly coralline algae and poops it out in nice piles. I wouldn't risk it as they can also go through a huge amount of coralline (and any other algae near the coralline) in a short time.
On the other hand you could try one for a few days and see what happens. Make sure there is no rock shifting though or he might go squish.
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