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Strange Hydra-Like Organism On Glass

Lowells Fish Lab

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  • 10 months later...
On 12/13/2021 at 12:20 PM, jesso435 said:

OP did you ever figure out what this is and what to do about it (if anything)? I have it all over my tank, too. Looks exactly like yours. 

Hi, after research my best guess was zoothamnium, a relative of vorticella. They have seemed to be harmless and have gone away on their own. Many of my newly set up tanks have gone through a phase where they appear, boom in population and then disappear completely never to return. My conclusion is that they're nothing to worry about.

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