Doni,
Don't want to hijack, and I (admittedly
) haven't checked in on your thread in a while, but I wanted to give my two cents on your situation. I've had flatworms since I can remember, and I've never had any huge problems with them. They are unsightly, but in my experience virtually harmless. The population waxes and wanes in my systems, but I know how attentive you are to your tank and they are easily minimized with regular water changes, etc. If I were you I'd keep up your regular maintenance and try to suck out as many of them as you can each time you do a WC. It's hard to totally get rid of them but you can keep their numbers in check pretty easily usually.
I wanted to give you an update on Fantasia too...she is doing wonderfully in her new home - she is the queen of the tank and my personal aiptasia assassin. Periodically I bring rock and or corals from my prop tanks for her to "clean" off the pest anemones, and she literally wipes them all out within minutes. It is amazing to see nature in action. I can't get rid of those things no matter what I do, but she just sucks them off with ease...
Thanks again for sharing her with me! You're the greatest...