You have to watch the strombus snails, they're omnivores so they'll steal the mysis from your corals. I have to guard my little favia frag & my smaller candy cane coral after feeding, knocking off the snails. We went from 5 to at least 50 in a couple of months. We've given away about 25 so far. They graze the glass & rocks (any annoyingly the powerheads, which they get stuck in & rattle around), but when I feed they go for the meat.
Laying eggs
This one was reeling itself back up to the powerhead via an almost invisible string of mucus that it had lowered itself by. It changed its mind on the way down, I guess!
