Reef safe?

[PAdrone]

Gorilla glue gel but also contains hydroquinone, which is my concern.

 

[DDenny]

I know people have used it but I have not. Maybe someone will chime in soon that has.

 

[Jason Scalise]

I have used it extensively to secure frags. I use the 'gel' version. I have not seen any ill effects on the individual frags, or other corals in tank or other creatures.