Amobience

I just got a black ghost knife, and in the tank he was put into there is a large fake tree root type decoration (and I mean large). It has a bunch of holes and is completely hollow, but when I was cleaning it I noticed that inside it's sort of rough and bumpy, not a very good place for fish to be. Well, being an electric fish he had to feel his way around as he explored his new home, and pretty quickly he slipped into the hollow tree roots and vanished. I tried looking in there with a flashlight, but saw nothing.

Has anyone else had this problem? Do you think since he can't see, he'll get lost or something and die? I'm worried about it, since I know they can't see too well so he wouldn't be able to see the light outside of the log. Would his electric sensory system allow him to navigate out of there?

I don't think it's even been an hour since he's been in there.