Thanks everyone! I need to do some editing on the video so hopefully I can get to that today.
I went downstairs to the basement kegerator to get a beer and saw all these bits floating around in the aquarium. I don't have any sand so I knew it wasn't something being stirred up. The particle in the water (sperm/eggs) were very buoyant and the fish were going nuts! I started to inspect all my acropora thinking it could be a spawning event.
The only coral spawning was the blue tort colony. My understanding is that acropora have to be relatively large colonies in order to spawn. I'm sure a healthy system and solid water parameters helps to. Spawning is not a random event and the sperm and eggs build up for weeks ahead of the event.
I think the recent moon cycle triggered the event. It being a "super moon" and closer to the Earth, I think it's possible that it initiated the spawning whereas other lunar events would probably have not. Who knows!
