I am seriously at a loss here. I looked in my tank today and saw a 1/2" Aiptasia along with what looks like 1 or 2 more starting out. I have not added anything whatsoever to my tank in at least 4 years. 4 years ago I had a few Aiptasia but a couple peppermints took care of them. Since that time I swear nothing at all has been added. The peppermints all died over 2 years ago. The only thing I can think of is about a month ago I got some Omega freeze dried brine shrimp cubes. Is it possible for Aiptasia to survive coming in on that? This tank only has 2 clown fish and maybe 4 or 5 Nessarious snails.