How to remove BTA from rock?

[Reef Breeder 2013]

I have 5 BTAs which are a pain so I'd rather swap them out for some corals in my LFS. The problem is that they are very hard to get out, and I can't put the rock in a bucket or something similar because it is the main rock in the tank and it is really big. I've read that if you put ice on their foot they will come loose from the rock.

 

[sfin52]

I have 5 BTAs which are a pain so I'd rather swap them out for some corals in my LFS. The problem is that they are very hard to get out, and I can't put the rock in a bucket or something similar because it is the main rock in the tank and it is really big. I've read that if you put ice on their foot they will come loose from the rock.

Look at the sticky nem cannon