I have a CC star in my bare bottom sump. I know they will eat coral but is it nutritious enough to keep them alive? I have a 20 gallon RBTA tank with an overgrowth of Xenia. Can I put rocks of Xenia in the sump for it to eat?
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He will probably eat the coral,but you can also try feeding him some shrimp.I heard they eat
anything they can get their hands on.

