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#1
08-31-2012, 03:00 AM
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It's unlikely, but possible your urchin are your zoas. As Reefwars suggested, they are likely down some crevice somewhere. I have lost more frags then I care to remember as a result of my tuxedo urchin doing this. I finally put him in my sump!
Dan
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Link to my Tank Upgrade Thread Dan Leus, Marine Biologist 20+ Years Marine Aquarium Experience Save the Reef, Buy a Frag! 
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