Snail explosion (Vermetid snail/ spionid snail?)

RedFrog211

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When I started up my tank a while ago, I ignored these guys, thinking they were harmless feather dusters. Yesterday I happened upon a thread where someone ID’d them, and everyone was saying to get rid of it. Went home and noticed just how many there were- they are quite prolific, and are everywhere. Is there something I can buy, perhaps a bumblebee snail, that would eat them?

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Mikedawg

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I think the "evidence" on bumblebee snails as a natural predator is sketchy at best; reducing food in the tank works to some degree or, as you know, breaking them off/gluing over them is effective on individuals. Of course, you can just consider them part of the tank's diversity which is a good thing. Personally, I've never seen a vermetid or spionid worm harm a coral and they seem to come and go in my tanks.
 

Vette67

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Those are spirorbid worms. Harmless. And there really isn’t much you can do about them. I have them in m tank all over the place. I must have tens of thousands of them in my sump. They even grow on my clams shell. But they are harmless feather duster worms and won’t hurt anything.
 
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Vette67

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If you really want to get rid of them, some asterina starfish will eat them. But you would need a LOT of asterinas to put a dent in their population. Here’s a picture of one of mine eating a spirorbid worm in my refugium.

 

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