not aptasia? yeah they do spread quite abit. i'd watch them for now and get a peppermint shrimp when i have the chance.
update, currently in are one skunk cleaner shrimp, and three turbo snails. i initially got two shrimps but one died half and hour into the tank while the other is feeding on pellet(s) already. its quite saddening to throw away something that pretty. and snails are pretty much moving faster than i thought, working their way through the rock. pictures probably tomorrow.
anyone has an id on the corals posted above?