How about this nice white old chopped up reef that is sold here at Riverfront?
It is Calcium Carbonate, as is Tufa I believe. I have quite a bit of it, and once a little Coraline grows on it, you can't tell it apart from my other live rock.
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Bob
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To be loved you have to be nice to people every day - To be hated you don't have to do squat.
---------Homer Simpson--------
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