Is this a pest??

Peace River

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RiTZ_The_Reefer

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jassermd

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Does it open up and then close up quickly? On a rock I assume?
If so, likely a fan worm. Hard to see clearly, but that's my guess given what we have to work with...
If it's a fan worm, not a pest. Hitchhiker that's harmless...
 

Freshwater filter only or is it? Have you ever used an HOB filter on a saltwater tank?

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  • I don’t currently use a HOB filter on my reef tank, but I have in the past.

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  • I have used a HOB on fish only or quarantine tanks, but not on the display tank.

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  • I have never used a HOB on a saltwater tank.

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