i've had a problem with these brown polyps for some time now, and i was wondering if anyone has a good way of eleminating them or if anyone knows exactly what they are. they are in decent control now, but ive had them to where they are essentially overrunning the tank. one has shown up in the middle of a really good green star polyp colony i have, and it has made them remain closed for a long time. ive tried injecting them with calcium through a hyperdermic needle, which works really well at killing those i have, but im tired of having to do monthly maintenance on it. any help would be greatly appreciated.