small tank anemone?

I have a 16 gallon tank with two perculas and a bicolor pseudochromis, aragonite sand, a powerhead, good filtration and compact flourescent light. Although the tank is well established, there is no skimmer or sump, or live rock, and no corals. The three fish have done well now in the tank for 2-3 years.

Was wondering if anyone feels I could try an anemone of some sort and, if so, what type would you recommend?

Thanks.

[mattmku]

I've had a bulb tip in my 20 gallon tank for almost a year but also have a protein skimmer, and a large amount of live rock. I'm not exactly sure how much of a biol-oad an anemone imposes on a system but I'd be cautious if I were you, especially with no live rock. A dead anemone can cause major problems.