Oh okay.. err, I don't know the name of that worm. But I have them too... they just seem to eat detritius and other junk in the rocks and tank. All in all.. harmless.
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20g BB Mixed Reef // Coralife 150w HQI // AquaC Nano // Koralia 1 & Seio 820 // Jager 200w // AC50
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