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#18
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I'vve heard it in my tank too.....usually after the lights go off. I later discovered that a few of my Trochus snails were twisting around in their shells pretty violently... and it made a clicking sound on the glass....mystery solved...for me at least
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35g Algae tank....some nuisance corals -- Deltec MCE600 Skimmer -- 4x36" GLO T5HO |
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