Can anyone post an aiptasia pic in here or a link of a pic? I think I have one too but I'm not sure...and I tried a search for a pic but didn't find one.
<a href="http://saltaquarium.about.com/library/weekly/aa100798.htm" target="_blank">http://saltaquarium.about.com/library/weekly/aa100798.htm</a>
see if this link works, it had a picture and some information.
HTH
The link works for the picture.
Peppermint shrimp are hit and miss and will not go after larger aiptasia.
The stuff from Chem-Marin does work and is reef safe. It took care of mine while the peppermint shrimp continue to eat regular food. There were no adverse effects on the tank or the corals.