I inject each one of them with concentrated lemon/lime juice. So far it has killed all of them excet one. The same darn aiptasia has withstood 3-4 injections and is out again the next day.
I think I'll call him Hercules.
46 gal FOWLR
11lb Live Rock - 40lb Live Sand
ProClear Pro 75 - LR rubble & skimmer in sump
AC 300 HOB
AC 402 Powerhead - AC 301 Powerhead