Techniques for Removing Hitchhiker Crabs?

[livinlifeinBKK]

So when I put my little Goby in the DT tank soon I'm concerned some of the crabs that hitchiked in might be a threat to him and even try to eat him possibly so I'd like to try to remove as many as I can in the next few days although I know I can't get em all...what are some techniques for removal. I've heard of the "bottle neck" technique but forgot how it works. Can someone refresh my memory and/or offer other effective removal techniques?

 

[Jekyl]

What crabs?

 

[Jekyl]

Bottle trap is just taking a 20oz, Gatorade or 2 liter, cutting the top off and inserting it backwards into the bottom. Then putting food inside

 

[livinlifeinBKK]

What crabs?

I'm not sure but I'd guess they're gorilla crabs or stone crabs and there are at least a few...they're gray colored all over (sorry, I know this doesn't give much information). I never took them out because I never noticed them causing any harm and helped with the CUC

 

[Lost in the Sauce]

Are you willing or able to take pieces of rock out?

I've had good luck with hyper salinity rock dips 3-5 minutes in a bucket.

 

[livinlifeinBKK]

Are you willing or able to take pieces of rock out?

I've had good luck with hyper salinity rock dips 3-5 minutes in a bucket.

I'd really rather not disassemble the scape I have put together and have corals glued directly to some of the rocks I'd be worried about

 

[kingoftheHiLLpeople]

Bottle trap as said above as long as they arent too big. Gatorade bottle would be great!