Help identifying strange algae

[monocus]

they will eat the large ones-just that they will group feed on them.aptasia wiil eat a berghia only if they fall on the feeding arms.as to your cyano,what salt are you using.i never had cyano untill i used h2ocean salt.i switched to seachem reef salt and only get cyano maybe twice a year-fixed with chemclean.it also could be a certain time of year where it occurs naturaly