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.