Long tentacle anemone not eating

[daniella3d]

Hi,

I got a huge (10" diamater with tentacles) long tentacle anemone about a week ago and it's looking good except that it,s not accepting any food at all. It does not have any reaction to any food I put. It sometime grab it but soon let go.

I got it for my clownfish that were harrasing my duncan to the point it was going to die but the clownfish are not yet paying attention to the anemone.

this is an anemone that live in the sand and my tank is 23" deep and my lamp is Phoenix 14k metal halide 250 watt. The anemone is well inflated during the night but shrink somehow when the metal halide start. Does that mean it has enough or too much light? it has moved at the far end of the aquarium where the light is less strong. Does it have enough energy with this or should I be worried that it does not eat?

And for the clownfish, will they eventually adopt the anemone? I did a photomontage in Photoshop with the picture of the actual anemone and my clownfish in it and stick that outside the aquarium as I have read that it sometime work, any other tric?

here is a pic of the anemone: