glueing rocks

[sflyfish]

i want to make some shape from rocks (base rock) but i'm not sure what glue would be sw safe for fowlr..i no this is another darn stupid question from me ... but this seems like a good place to make a fool out of yourself...i'm about 6 or 7 weeks before adding water

 

[Toirtis]

Epoxy putty for marine tanks works pretty nicely:
http://www.marinedepot.com/aquarium_miscellaneous_epoxy.asp?ast=&key=

 

[sflyfish]

thanks

 

[sflyfish]

so i should stay away from stardard 2 part epoxy glues

 

[Toirtis]

Yes...most are non-reactive when cured, but unless they are listed as specifically marine aquarium safe, why gamble?