Had a few aptasia and pepermint shrimp got them all except the largest one. The aptasia was close to a polip colony and saw it actually eating a polip. Anyway I had a very small ricordea that got unatached to its base and it drifted right into the aptasia which started to digested it, thought it was gone. Checked the next day and the aptasia was melted and the ricordea was out of it unafected. Aptasia is completely gone now. Have you guys seen this before?