Are these good or bad?

[Grimreaperz]

Found a bunch of these on my glass an I see them on a frag plug. They seem to be spreading quickly should I be concerned

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[Sugar Magnolia]

Harmless spirorbid worms.

 

[Pandagobyguy]

This^

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[Grimreaperz]

Harmless spirorbid worms.

Yay! So happy to hear that. I think I was overfeeding for a bit (reduced now) and have seen a lot of things just explode in population in my tank. Like these hard to see but they were apparently mislabeled as digitate hydroids. When doing research very different opinions on how to get rid of them nothing seems to work so far. White long stringy fuzzy looking thing that flows in the current then retracts. Said to be jelly fish and have sting also said to be harmless....hard to get official data on these guys.

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