In my fight with both aptasia and mojano I can honestly say if you really want to nip it in the butt use 2 methods of removal.
I personally used Aptasia X its about $18 at Big Als and then I bought about 4 peppermint shrimps.
I read somewhere the pepp's won't eat larger Aptasia so I used the Aptasia X on everything I could reach, and the pepps took care of everything else. I also used APX on the Mojano.. Those are a little harder to get rid of, the APX doesn't work as well.
It takes a few applications to eventually get them all but be diligent and you'll get rid of them in no time