I've nearly got my drainage setup in my tank and I'm starting to think about backgrounds. My tank is only 12" wide and I want the future cobalt tincs to have as much floor space as possible, but also want them to be able to climb around the background.

I like the idea of a Great Stuff background, but am worried it might expand out too far, but maybe I'm over thinking it.

Also, I'm going to want to plant the background. I'll be doing more research, but opinions are greatly appreciated.

This will be my first build.

Thanks in advance!