I've been through plenty of berghias but they never totally took care of my aiptasia problem. I had them laying eggs and everything but they just seemed to dissappear with time and aips still there. For years i've heard people say peppermints will do the trick so I would get 3 to 5 at a time for my 120g but still aips. Finally I purchased 20 of them from a place for $2.50ea and I am totally aiptasia free now. I found they don't relly like to mess with large aips so I would make the large aips draw up by hitting them with some kalk paste,joes juice,etc. whatever I had at that time and overnight the peps would take care of them. HTH. It def worked for me. I have a little army of peps in all my tanks now and NO aips.