How often to feed Cerianthus?

[Aidenb]

I figured here would be the most appropriate place to post as they are not true anemones. How often should they be fed? I have it placed in a cup of sand to give it sufficient sand to burrow so it's kind of out of the way of the main areas. Is 5 days a week sufficient to keep it healthy or should it be fed daily? I figure skipping the days give it a chance to clear out its system but if they require food daily I can do that.

 

[jraker]

5 times a week should be ok. more is better though.