I purchased some real nice live rock with purple stuff all over them. They have been in my tank for 4 weeks now. I got my CUC in and working on the algee. My question is if it is ok or are the snails supposed to be eating off the purple stuff? If not then I need to get them out. I believe they are turbo astrea snails. It seems that if the purple stuff is coraline algee then they need not be eating it. Input please.
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