Out of principle I would buy rock elsewhere.
Are you asking whether you should be buying coral frags or colonies? I would practice with frags. What types are you interested in keeping.
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-Quinn
Man, n. ...His chief occupation is extermination of other animals and his own species, which, however, multiplies with such insistent rapidity as to infest the whole habitable earth, and Canada. - A. Bierce, Devil's Dictionary, 1906
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