Gluing frag to live rock

[rocketlily]

I need to glue a little frag to a piece of live rock. The live rock cannot come out of the water. Does anyone know what kind of glue I can use underwater?

[fencer]

You can use a reef putty. I think they sell them at most LFS. I have never used the product

[BC564]

I have glues the little frag to a little rock...then attached the little rock to the big live rock under water with the putty .....does that help?
By the putty I mean the play dough stuff you buy at the LFS.