Gorilla Glue is a brand that makes a lot of different types of glue. Any type of glue labelled as 'cyanoacrylate' (or 'CA' for short) is fine, so look for that on the bottle.
Ic-Gel $7 or so and really gets the job done. Good for rocks coral fragging glueing frags in place you name it You have to hold for a bit w. pressure if your doin it underwater to make sure it really sticks