This is my first post here and my first ever terrarium/paludarium build so I'm sorry for all the questions in advance! Also this isn't really about frogs, but no one seems to be able to answer my questions and lets face it, you guys on here know your stuff. I'm trying to build a brackish half water half land setup for some red clawed crabs. I have everything worked out for the most part. I do have some questions about egg crate and a background though. I was going to use the titebond lll method. But i'm not sure what to mix with the glue to cover the great stuff foam. I was thinking crushed coral, but would it be to heavy? It wouldn't be under the water. Since it is brackish I was going for a sort of "bog by cliffs" look and crushed coral was all I could think of. My second question is about the edges of the egg crate. I know you have to cover it with a screen to keep the substrate from falling through the holes, but how do you keep it from falling over the edges into the water? Do most people put driftwood around the edges to help with that problem? Also, will cork bark grow mold if it is half submersed in salty water? I was going to use the bark for the edges of the egg crate that would go down into the water.

Sorry for typing so much! If you see any sort of obvious problems please let me know! I'm trying to get a general idea of what I should do/how/what I need before I start.