SUMMARY of my 1st week owning a BTA (I hope it's all just normal behavior):
1st 3 days listed already in the thread. Added him to the tank, and he hid inside a LR
after 3 days the BTA came out of his hole. I woke up one morning and he was gone. Searched the entire tank and could not find him. Finally, I took a little mirror from my wifes makeup bag and found him hiding under a rock ledge in the back of the tank. He was attached to the Rock hanging just above the substrate. It was real hard to see him, but I could see his bubble tenticles. He stayed there for a few days.
Sunday morning, when I peered in on the tank I noticed he had moved again and was now stuck to the back glass down at the bottom right hand side of the tank. He looked good.. He was all open but he wasn't extending his tenticles.. they were all tight bubbles against his body.
Today he was on the move again. Before I left for work, he was now on the substrate UPSIDE DOWN. I thought to myself that he was a goner. I watched him for a while. He went from standing on his tenticles to rolling on his side to attaching himself to the glass again.
I just talked to my wife and she mentioned that he's now on the sand again back by the ledge. He's hard to see but she can see his greenish tenticles. So, I assume he's open.
anyway.. I hope he finds a nice spot so I can enjoy him soon.