What do you use to bond rock and corals?

[GrimReefer]

I've heard superglue gel is popular. I was wondering if you can use it underwater without any toxic effects, or if there was something like that available? I've also seen Marineland Holdfast epoxy stick, but I'm not sure if you can use that underwater either. What do you use?

[Manny]

your local live fish store should have the two part epoxy that will set under water and that is not toxic.

[RonPeter]

I've used superglue gel with great results. Also if you need something thicker try Loctite Extreme it works really well also.

[GrimReefer]

Originally Posted by RonPeter

I've used superglue gel with great results.

does it have to cure out of the water?

[RonPeter]

No it doesn't, I put it on and let it set for a few seconds and then place it in the tank.

[Bryan]

I use hydraulic cement. Works better than any of the two part epoxy