[angnak]

1. not real sure.
2. Yes this is normal, mine did it a while back and I thought the BTA was eating it and then the little guy poked his head out as if to say what are you looking at. I see him all the way in there every once and a while.
3. The anemone is probably still a little shocked. They have very slow metabolisms, hince the reason it takes two or more weeks to completely die. One of my BTAs did not take food at first and was not "sticky" but after a week or two it finally took the food and was very "sticky" So give it a little bit. After it started eating is when it started moving from where I put him. Since you have a clown hosting, you should not have to feed the anemone as the clown will do so by just dropping some while it eats. Mine actually spit food into the anemone and go back to get some more for them. I know it is scary to wait, but once the tentacles start to drop off that is when I would worry.
4. Yes, this is normal. I have been told they are expelling the old air/water to get new water. Some say they should only do this once a week or so, but I have had mine for 2 yrs now and mine seem to do it every other day. They shrink down to nothing sometimes and it worries me but a few hours later he is larger than ever.