Bubble tip white rings?

Have had my green bubble tip anemone in my tank now for 2/3 weeks, it is constantly moveing towards the back hideing behind rocks, its been a week solid now and he still has not moved, because of this it its not getting a lot of light , very minimal, i noticed today its getting white rings round the tips, should i be concerned, it hides as if the smallest of airflow or even fish swimming past it irritates it, any ideas?

 

Nope, I'm not a fish expert, but I NEVER knew corals can move.

 

bubble tip = invert

 

Mine moved around for the first 3 weeks I had him but finally found a place and has been there for 2 months without going anywhere. The location he chose is one of the side walls with a moderate water flow, during the day he expands to take up most of the left side of the tank.

Just watch out our power heads, before mine stopped moving it a couple of it's tentacles got chopped off in one of mine, but he seems to have regrown them now.

As for the white rings, I haven't seen that yet.

Good Luck