Looking through some of my old aquarium supplies I realized I still have a sizable collection of safe, clean rocks available at my disposable. They aren't perfectly smooth, but all corners are rounded off and worn down enough so that they wouldn't catch on long-finned fish species. Several of these rocks would be big enough to use as an island type landscape in my FBT tank. I also like the idea of the rock because it would slope down into the water, rather than being something they'd have to try to jump or climb onto, and they could just walk right up out.
I was just wondering what people's opinions would be on using the rock as the main land area.
Would it be too rough on their skin? I'd assume I should find some mosses or similar flora to use to cover a good portion of it.