I think I have found the answer to my question in the FAQ’s, just trying to verify. A couple of weeks ago I bought one of the small feather dusters (red/white head, tube about 3″ long, smaller in diameter than a pencil). I drip-acclimated him like I do everything, then put him in a crevice where the bottom of the tube would be in the substrate. I never once saw him come out of his tube. A few days later I noticed that he wasn’t getting much light where he was so I was going to move him, but when I removed the tube it seemed empty. I didn’t actually watch the guy at the LFS bag him, but I left the tube in my tank just to be sure in case he was still in there. Now, this morning when I turned the lights on in my nano, there was a tan lump about the size of an M&M sticking out of one of my pieces of live rock. Once the lights went on, it started pulsating and eventually disappeared.