can you identify this connecting thread between the two achro?

[Ballyhoo]

hopefully this solves the issue

 

[Ballyhoo]

but then, LFS told me to clip off and not glue so why so many different responses? Arggh This hobby!

 

[Biokabe]

Your LFS suggests clipping because that's a more permanent solution, but it's also reliant on you having the right tools for it, and it's also reliant on you having a delicate enough touch to clip it off without breaking your coral colony off the rock. Also, if you don't clip enough, the snail can regrow and you're in the same situation.

Posters here suggest supergluing because all that requires is that you have superglue (which you almost certainly do if you have corals). The superglue plugs up the tube and makes it so that the snail can't cast its net (which is their problematic behavior), slowly starving it. The advantage of superglue is that you almost certainly have the tool, it's harder to mess up, and you're less likely to break your colony up from a clumsy clip. The disadvantage is mostly just that you end up with an ugly plug of dried superglue, and the superglue may do more damage to the coral than a skillful clip would have done.

Basically it's two ways to attack the same problem, and most people find the superglue method easier than the clipping method.

 

[fish_collector]

If you clip off the tube, you won't get the snail that's deeper down inside. If it were that easy, vermatids wouldn't be such a problem. Super glue won't hurt the coral, it'll grow right over it in a few weeks.

 

[bluemon]

Definitely Vermetid snail, their webs can be super long when they get blown off.

Superglue the entrance, let it die, and after a couple weeks, take the glue off to let the rot inside come out.

 

[BonnieB]

it could look long because I used zoom on my iphone, plus i imaged through a flipper magnifier.
Saying that, why does it need to be super glued? Can I just use some clippers and chop it off?

Ah, I was right the first time! Shouldn’t have second guessed myself That is a vermitid shell for sure! Super glue the mouth closed like suggested above!

 

[BonnieB]

If you clip off the tube, you won't get the snail that's deeper down inside. If it were that easy, vermatids wouldn't be such a problem. Super glue won't hurt the coral, it'll grow right over it in a few weeks.

^^^ this