Any easy anemones?

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.

Thanks, all....even aptasia !!

I think the bulb is 12 watts. Maybe I will give a small bubbletip a try.