Feather duster put in tank today. Parameters all solid as can be (ammonia, nitrites, nitrates all good). He had decent flow and was acting totally normal all afternoon. The moment I turned out the lights, boom the bugger jumps ship and is now completely out of his tube and crawling on the sand. Do I just leave him and pray he is okay? I've read trying to put back in the tube is a bad idea I mean he left the tube for a reason right? Nothing has picked at him as I've kept an eye on him since putting him in the tank. In the attached picture my green goby is chilling by his tube now that it is empty but the goby does not bother anyone and is a very solitary fella. The second picture is after he was put in the tank. Seemed quite content I figured but apparently not. I'd hate to lose him and don't want him to die while I'm at work and throw the tank off with a die off as he is quite chunky.