What is it

[klauspabst]

After I put in my new rocks in the water about 1 hour later something was crawling around on the sand and then up the glass and back down.

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[klauspabst]

I guess if no one knows what it is by tomorrow, I'll just take it out and throw it away, just to be safe!

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[ezy33]

Look up limpet.

[klauspabst]

Your my hero! Thanks a tons!

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