Add to existing Aquascape

[PapaDragon]

I would like to add to my current aquascape. I don’t want to remove the current rock so is there anything besides putty or super glue that can harden underwater that others can recommend.

 

[Peach02]

Not much apart from variations of that eg marco Rock cement or EcoTech coral glue

 

[PapaDragon]

Not much apart from variations of that eg marco Rock cement or EcoTech coral glue

That was pretty much my list.