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Unread 11/10/2017, 02:13 PM   #6115
jlmawp
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Quote:
Originally Posted by mtwelch View Post
Please tell me what these are and if they are good or bad for my reef tank. Thanks for your help.
Looks to me like vermitid snails. They can be a nuisance to corals around them. They coat the area around them with slime to collect food, which aggravates the corals.


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