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inTank Media Baskets

Long, Hair-like Tentacles ???


bikinibottom

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I was looking at my tank with a flashlight tonight and noticed that on one of the pieces of LR there is a spot from which 4-5 long (2-3 inches long) "tentacles" were eminating. They are all about the thickness of a strand of hair, the same thickness from top to bottom, and never come all the way out -- one of the ends stays down in the hole in the LR. They are clear/purplish with black or red bands/stripes. When you swish water near them, they recoil back into the rock slowly, like a tape measure.

 

What are these and what do they do?

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