Gluing new rock to existing rockwork in the tank

[paulrathor92]

I'm upgrading to a slightly bigger tank and want to add a rock arch. Can it been done while the old Rock work is submerged? If so what should I use to glue it?

 

[Jeffcb]

Yes you can. I used Two Little Fishies brand AquaStik underwater epoxy putty. It comes in 2 colors.
It will make you skimmer overflow for a while so you might want to turn skimmer off for a day or so. Good luck!

 

[Quietman]

E-Marco 400 cures in water. I have used it wet but not on established live rock.

The putty I used (Tunze) are great for attaching rock rubble (coral frags) but do not set hard enough to support a more complex bridge in my opinion.

 

[paulrathor92]

It's only going to be a small arch. Maybe 7 or 8 inches I have the tunze putty laying around gonna give thar a shot. Thanks for the help.