He's presently in the temporary cleaning tank. It was cleaned out, fresh moss put in, one pond with dechlor water, a fake plant thing which was also cleaned, and a fake tree which was cleaned.

I just watched him climb up the glass wall, reach the top, then grab the mesh and try to get a grip, maybe push on it, etc. Keep in mind that right now there is no bulb on him.

I think now I'm also worried he's going to keep doing this until he hurts or exhausts himself, before I can get him to a vet (if they tell me to bring him in).