Is it safe to use superglue in my tank, I am planning on using the superglue to glue the rocks together to make a cave for my cichlids. The reason why I want to use superglue is because I have a friend that uses this stuff for his tank, he uses it for his saltwater aquarium. He says that it is alright to use it for salt water and that guys from his forums use it to glue the zoo's to their rocks. So do you think its alright to use in freashwater?