Looking at your name, what kind of medic are or were you. Retired Navy Hospital Corpsman here.I read your amazon review just last week. Glad your bryopsis is gone. As far as the damsels go, it is possible that there was harassment going on due to the small size and lack of territory. Keep an eye on everyone and if anyone stops eating, you may want to consider a QT. Something like a 5 gallon home depot bucket with a heater, PVC elbow or two and sponge filter will work for short term