that makes me wonder three things, proper acclimation to ensure their immediate survival, a predator, or a heck of a lot of aptasia behind/in your rock workI actually looked again last night, and I found one. So must be eating them to still be alive this long. But I notice no nems missing that I can tell, and have yet to see a nudi actually touching one. Hopefully more than one survived so they can multiply. I have doubts.