Is crazy glue reef safe?

[Carrera75]

Originally Posted by Lampshade

I've used gorilla glue before in my tank, it's a polyurethane so technically it should be inert once cured. Only issue is that it's only a mechanical bond, so doesn't do to well on smooth surfaces. I just used a locktite on a motor impeller while i wait for the replacment part from tunze. The magnet slipped off the ceramic holding the blades. So far it's worked great, and my fish are still alive!. might not need that replacment part after all...

I didn't know gorilla glue could be used to glue frags. How long does it take for the glue to set? Can this be used under water? If this really works then I'll be buying some for sure. I have tried Loctite glue and while it works great it is also more epxensive. The bottle is a lot smaller than the reef glue fish stores sell.

[Lampshade]

I don't know about using it underwater, Polyurathane gives off some nasty's while curing. It would harden underwater for sure, but not sure how toxic it actualy would be while curing. I've always waited 12+ hours to put the stuff in the tank(They say 2 is cure time, i give extra). Gorilla glue is pretty much the same as the PL Premium construction adhesive, same base chemicals, slightly different mix.

Edit:
Here's the MSDS for the glue, not very safe in liquid form. I'd keep it out of the tank wet.
http://www.gorillaglue.com/Portals/0...%20Jan2010.pdf