My tank was getting overrun by aiptesia , frankly the chemical treatments are hard if you have more than 5 or 6 aiptesia, you are sure to miss a few A copper band butterfly worked wonders and no sign of aiptesia. It feeds like a pig on certain foods - PE Mysis and EASYreef massticks easyreef massticks seemed to be discontinued in singapore for some time and cant order it over amazon, but I managed to order it online via some other providers. Now have a happy butterfly and no aiptesia Sent from Singapore Reef Club mobile app