Ok - here is what I know about anenome - first we "rookies" should steer clear of them -
Ok that said, who can resist? - those clowns have to go somewhere to "play" instead of wrecking havoc on those new softies we laid out all that cash for.
Next - get yourself over to the WebMedia FAQ's on Anenomes -
ASAP!
http://www.wetwebmedia.com/marine/in...a/anemones.htm
Probably everything known to date somewhere in them about this beast. - "lots" of good reading/learning info here.
My guess you need to learn what specific things yours likes, ie food, light, clowns, etc. and what things it does not, other corals or the very worst in a small tank, another Anenome (re: "AnthonyC"

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If is disturbed, it will "wander" potentially doing much harm to other life in reef.
I kept all my corals in another tank when I first put in my BTA - he wandered about for 3 days, checking out every nook and cranny, top and bottom of tank, before happily settling down in one spot - surprisingly on opposite side of tank from my MH light which I did not expect. - but he is happy now.
He is tough to feed, but I am getting hang of it. - Couple times a week I use a hemostat to "carefully" give him very little pieces of Formula 1 or shrimp (Mysid, or cut from prawns gotten at grocery - He reallly like those) - but keep pieces small or he can overdose and bust open. (never bigger then 1/4 inch piece)
Another trick I learned was to put something in tank first to attract the clowns away - mine have not yet figured out they are supposed to be feeding the anenome instead of snatching away food he catches.
But so far as I can tell, he is doing great - fully formed bubbles & greatly elongated arms - just gorgeous when opened up. - my clowns love him also.
My one "weird" observation so far - is that somehow the anenome and clowns "communicate" - was quite a "love ritual" to watch before he would accept them - & secondly - there are periods he somehow lets them know not to bother him

- esp. when he has a piece of food and is starting to much it down. - clowns want in - but he won't let them ("somehow?"

& and they steer clear - know this sounds goofy - but have been watching this closely for over a couple of weeks now. Don't know if normal behavior - ??
Anyway, you have lots of good reading/learning ahead of you if you go to that link I put up. Also good comments from our local "experts" in both posts and 3Reef "links"
Check out for other stuff in your tank also.
Like me, expect the more you find out, the more you find you don't know. We are all way to overconfident starting out in this hobby - but just takes one or two losses due to negligence/ignorance to learn "humilty" quick. - Am sure the same for most.
Good Luck,
OmarD