What glue or adhesive on rocks?

[dib]

Im going to be aquasculpting my 20g nano set up. What can I use to glue or hold rocks together so they are safe and dont fall? The tank is empty now and I will put in rocks then live sand and water. So whever I use will be done in a dry environment. I dont want to get the wrong thing and want something that wont harm my tank.

 

[booth2010]

Ive read some people drill holes in the rock and cut plastic clothing hangers to use as rods to keep em together. I dont know if its a safe plastic though... You could always try aquarium safe silicone.

Or zip ties

 

[TheAcroholic]

I always use epoxy. Can get it at petco. Works great

 

[GrizFyrFyter]

Emaco and hydraulic cement are popular.

 

[dib]

Cool thanks. Not sure if I'm going to need it, but good to know

 

[stunreefer Verified Sponsor]

I mainly use two things, either this TLF epoxy or E-Marco-400. Both work great... the epoxy works fine for smaller pieces and E-Marco for larger. Either will need to be braced (use anything to hold up rock while drying) if creating large overhangs for a few hours. Both will be rock solid within a day. If creating very tall aquascapes I use acrylic rods (available from Marco) or fiberglass driveway stakes (available from HD/Lowe's during winter) in conjunction with epoxy or E-Marco-400.