Just tossed some primer on and it looks pretty good. I imagine this could be used for all kinds of things, even those little dirty things lol. Silly gal.
Anyway.. here are some primed pics, reduced in size for your loading benefit.
Have fun with some gorilla glue guys.. I am going to be experimenting with it for a while now.
Hints I know for sure.. Place in fairly decent amount of water.. approximately 8-10 parts water for 1 part glue.
Rounded coral, use a small 20 oz coke bottle, or a liter... for larger projects and different sizes try an aquarium bowl or other such things.. Leave sitting for a day to a day and one half.
Glue on bottom may be wet still so after draining, rinsing, and draining again, carefully extract the glue formation and tip upside down to dry bottom. May need to puncture bottom area to allow glue to dry more effectively.
Have fun and good luck with your caves, coral and , ahem, other things...