I'm fascinated with coral defense mechanisms. I don't like for my corals to go to war but it's part of keeping a reef. It will happen to everyone if you're in the hobby long enough. I'd like to see others experiences with different corals battling for space on the reef. Acan vs Chalice: Acan wins Green Millepora vs Blue Snowflake Polyps (Sansibia): I call this a draw. I was able to save frags of the green Milli and the Sansibia vanished in the area but there is still a ton in the tank. It's like they nuked themselves to take out the Milli.