Attaching Rock to Back Wall?

[ZJGAquariaFreak]

Has anyone attached small rocks to the back wall to decorate, or place frags? If so how have you attached it? And any negatives to this?

 

[cloak]

I've glued a few frags to back glass before without any problems. There was plenty of coralline algae on the glass to adhere to though.

 

[Eckolancer]

Super glue frags to the back wall all the time. Even glue empty frag plugs to the back wall for easy fragging

 

[9balliw]

I have glued frags to magnets then you can move to acclimate to light worked ok