8 Segment Free Swimming Critter

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Jack_Aus

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Hey guys

Sat down for a close look at my reef (4 months old) and noticed a few of these guys pulsing around the tank. They have 8 segments and they pulse like a jelly fish.
My first thought was a hydroid in its free swimming stage?
If so, is this something to be concerned about our just leave them be and let everything find its level?

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IMG_5893.jpeg

Cheers Jackson
 

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