Thanks for the additional info! I just confired on swf site that they are the right species, and most of my Aiptasia is fairly small (well, what I concider small), i would say most are only 1/4" and one or 2 are about 1/2". Hopefully that is not too large for the shrimp to feast on.
I wish I would have been more active in this forum a few months ago! I thought the 'aiptasia' was a 'good thing', and did not want to disturb so i did not scrub the lr. Never encountered it with my other sw setups before.