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Old 09-22-2003, 07:26 PM   #11
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It really does depend on which species you choose. Some like me see a benefit from their constant scraping of the coralline sufaces and some don't.Some urchin may damage corals indirectly but I have not seen them actually consume them. The one IME, that has proven to be the best is the Blue Tuxedo Urchin Mespilia globulus.

Great algae eater and does not "strip" coralline bare. It's more like a light shaving. Either way not a bad addition.

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Old 09-22-2003, 07:52 PM   #12
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i had pencil urchin eat sand sifter star and a ton of coraline i got rid of it

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chi, urchin

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